barriers / 阅读 / 详情

如何区分天然橡胶和复合橡胶

2023-07-21 17:40:54
TAG: 橡胶
共2条回复
meira

一、橡胶的分类

橡胶主要分为天然橡胶,复合橡胶,合成橡胶三类。

其中天然橡胶及复合橡胶是我们目前进口的主要品种;合成橡胶是指从石油里提炼出来的,暂不考虑。

天然橡胶(nature rubber)是指从天然产胶植物中制取的橡胶。复合橡胶(compounded rubber)是在天然橡胶的基础上加少许合成橡胶及一部分化工产品混合提炼而成的。

◆天然橡胶

天然橡胶按照制造工艺不同又分为标准胶和烟片胶,标准胶就是standard rubber ,如中国的标准胶就是Standard rubber of China ,简写SCR,同理有SVR ,STR ,SMR 等等。

标准胶也有不同的等级,如SVR3L ,SVR 5,SVR10,SVR20,SVR 50…等等;按照数字大小,数字越大,质量越差;数字越小,质量越好(区分质量好坏的最重要因素是产品的灰分及杂质含量,灰分越少,质量越好)

烟片胶是Ribbed Smoked Sheet,是指用烟熏成的薄片状的橡胶,简写为RSS ,这个简写不同于标准胶,不按照产地来分,在不同的产地表达方式都一样。

烟片胶也有不同的等级,RSS1,RSS2,RSS3,RSS4,RSS5,同样的,RSS1也是质量最好的,RSS5是质量最差的。

◆复合橡胶

是在天然橡胶的基础上加少许合成橡胶及一部分化工产品混合提炼而成的。最常用的复合橡胶配方是这样的,如马来西亚的复合橡胶SMR Compounded Rubber 97%SMR 20(马来西亚的标准胶)+2.5%SBR(丁苯橡胶,一种合成胶)+0.5% stearic acid(硬脂酸)。

复合橡胶看构成其最主要成分的天然胶是什么,就叫什么复合,如上,构成其最主要的成分的是SMR 20,故叫马来西亚20号标准胶复合;也有烟片复合,也有标准胶复合。

慧慧

闻其味,观其色

相关推荐

treatment 的过去分词

1.【compounded(是动词?还是过去分词做状语?如何区分呢?) 】 是动词,有很多原因.首先,这句话主语在前面而且用逗号隔开了,在compounded这小句里面没有主语,如果它是过去分词作状语,那它用来修饰谁呢?再者,如果它是过去分词作状语的话,那它相当于一个形容词,从意思上看,副词 frequently 修饰形容词 compounded ,意思是“频繁地混合的”.再退一步说,如果说 frequently compounded 是本文里合理的形容词这个说法说得过去,那接上后文,怎么又不通了呢?答案只有一个,【compounded是动词的过去时】 2.选项A的话,“the treatment and release of……”解释的是上述的“problem”“为什么会出现”.而选D的话,“the treatment and release of……”解释的是“为什么出现在”“这个area”.一个强调原因,一个则侧重地点. 【网上找不到解析,全都是自己打出来的.我也在准备sat,呵呵,欢迎追问,望采纳!】
2023-07-21 15:28:411

compounded by后面好几个修饰语

with old structure problems compounded by a huge population是修饰city的,所以是定语.(定语:修饰或者限制名词的成分叫做定语,补语是动词或者形容词的补充成分).compounded是过去分词做后置定语.
2023-07-21 15:28:481

复式英语怎么说lofute

compound 英[u02c8ku0252mpau028and] 美[u02c8kɑ:mpau028and] n. 复合物; 场地; (筑有围墙的) 院子; 复合词; vt. 调和; 使混合; 使严重; 调停; adj. 复合; [语法学] (句子) 复合的; 合成的; 多功能的; [例句]Police fired on them as they fled into the embassy compound.当他们逃进使馆大院时,警察向他们开了枪。[其他] 第三人称单数:compounds 复数:compounds 现在分词:compounding过去式:compounded 过去分词:compounded
2023-07-21 15:28:581

compounded monthly什么意思

按月的形式复合(累计),具体看上下文意思~~~
2023-07-21 15:29:296

compounded

6.7%的年利率,按月计算复利. 6.7%的年利率是1//15,那么每个月的利率大概是0.56%也就是1/180,按照复利计算就是 18000*(1+1/180)^(12*10), ^后面表示的是几次方,12是一年12个月,10是10年,也就是(1+1/180) 的120次方,结果大概是1.944,那么乘以18000就是34995美元.
2023-07-21 15:29:441

compounded continuously什么意思

不断加剧
2023-07-21 15:29:533

一句英语,求汉语翻译+分析。感谢~!

是不是很符合逻辑,那么,沟通的问题,可加剧人与人之间没有利益分享经验(即语言和文化)的人?
2023-07-21 15:30:144

英语词汇学求解

Leave me alone!
2023-07-21 15:30:322

..............分析一下语法 He acknowledged that whatever neuroses

主语是whatever neuroses drove the criminal to commit the original crime
2023-07-21 15:30:413

combining单词举例

combining 的意思是结合。
2023-07-21 15:30:524

有一点英文怎么念

a little bit额 立头 比
2023-07-21 15:31:1011

“合成”用英文怎样说

synthesis 合成如,有机合成(organic synthesis)
2023-07-21 15:31:444

在线求一道英语数学题. Compound Interest.

英文看不懂
2023-07-21 15:32:043

英语阅读题

为你解答。16、C17、D18、B19、A20、C
2023-07-21 15:32:344

theproblemof后动词

答案当然是D, 首先,因为要保证主句结构,所以ABC都不对,不然的话the problem就没有动词了.后面作为伴随地点修饰所以用where. 希望能帮到你哦
2023-07-21 15:32:511

求翻译 a principle of 4100 dollars is invested at

4100美元的投资利率标准为3.2%,每年有复利。principle原则,标准,准则,操作方法
2023-07-21 15:33:004

错误的英文短语

  在什么样的情况下,你会用到错误的英文短语?下面就由我为大家带来关于错误的英文短语,希望大家能有所收获。   错误mistake的英语短语   What did you learn from this mistake?   你从这个错误里学到了什么?   That nurse should not plead inexperience in excuse of her mistake.   那个护士不应该借口缺乏经验来为她的错误辩解。   But that would be a mistake.   但是那将是一个错误。   She immediately came to me to admit her mistake.   她立刻到我这里来,并承认了她的错误。   This was a mistake because they all discovered how easy it was to be a pirate and became one.   这是一个错误,因为他们都发现做一个海盗是何等的简单,并且都成的海盗。   Why is this a mistake?   为什么这是一种错误?   We do not know why the translator made that mistake.   我们不知道那名翻译员为何会犯下这个错误。   One day heu2019ll understand his mistake.   总有一天他会明白他的错误。   He (made) a mistake so I told him to (do)the exercise again.   他犯了个错误,因此我告诉他把练习再做一遍.   But instantly she became aware of her mistake.   然而她立即意识到了自己的错误。   But this is a huge mistake.   但这是一个巨大的错误。   错误mistake的英语例句   She blasted to make him admit his mistake.   她激烈批评使他承认自己的错误。   He compounded his mistake by arguing with the teacher.   他与老师争吵就更加重了他的错误。   One should not plead inexperience in excuse of his mistake.   一个人不应该借口缺乏经验来为其错误辩解。   Lucky tells everybody that he had everything, but almost lost his life from one mistake.   拉基对大家说,他过去拥有一切,但因一个错误而几乎丧失生命。   Your description desperate, but only to analysis the statement of the word, you let us see thefundamental mistake.   你的描述令人绝望,不过只是对分析而言,你的陈述让人看到了它的根本错误。   And I think to count them out would be a mistake.   我觉得,认为他们已经被淘汰出局是一个错误。   Felicity (to Sally): I guess what Iu2019m saying is this might all be a colossal mistake, as my dad wouldsay, but on the other hand it mayu2026maybe itu2019ll save my life or something.   费利西蒂(对莎莉说):我猜我想要说的这个可能是个巨大的错误,如同我爸爸说的那样,但是另一方面也许u2026u2026也许它可拯救我的生命或者别的什么。   Its mistake is not to lie, but to proclaim that it will lie, for its very honesty undermines the value ofits deceit.   政府的错误不在于撒谎,而在于提前就声明它将会撒谎,因为,政府的诚实正在削减其欺骗的价值。   If even one mistake can drag your life down, you can imagine what kind of damage bad habitscan do.   即使是一个错误都可以拖累你的生活,你可以想象一下坏习惯能带来多大的危害。   Even then he would not admit his mistake.   即使那样,他也不承认他的错误。   Even then he would not admit his mistake.   即使那样,他也不承认他的错误。   错误mistake的双语例句   1. The president beat his breast and called that deal a mistake.   总裁捶胸顿足,称那是个错误的交易。   2. This was a genuine mistake, but it did cause me some worry.   这是好心办错事,可是确实让我担心了一阵子。   3. Could you have given them the wrong drug by mistake?   你有没有可能一时疏忽给错他们药了呢?   4. I may have made a mistake in that regard.   我在那一点上可能已经犯了一个错误。   5. What women mistake as thoughtlessness is often just diffidence.   女性误以为是考虑不周的事情往往只是缺乏自信。   6. No one should mistake how serious the issue is.   任何人都不该低估该问题的严重性。   7. I think it"s a serious mistake to confuse books with life.   我认为把书本同生活混为一谈是大错特错。   8. Beth was struck by how Naomi took the mistake in her stride.   娜奥米在失误面前表现得处乱不惊,给贝丝留下了深刻印象。   9. That was a mistake. We"ll never do it again.   那是个错误,我们永远不会再犯了。   10. Why should I pay the penalty for somebody else"s mistake?   为什么我要代人受过?   11. Once they realised their mistake the phone was reconnected again.   他们一意识到他们的错误,电话就重新接通了。   12. To be frank with you, Harvey, I may have made a mistake.   老实跟你讲,哈维,我可能犯了个错。   13. Mr Morris said the victims had suffered from a very grievous mistake.   莫里斯先生说遇难者因为一个极其严重的失误而遭遇不幸。   14. She went pink again as she remembered her mistake.   想起自己的错误,她又脸红了。   15. It sounds as if they might have made a dreadful mistake.   听起来他们似乎犯下了一个可怕的错误。   
2023-07-21 15:33:061

有关compound interest

选择(d). $6743.18这是一个银行存款复利的问题,每半年存入$500,期满后利息计入本金,从2000年元月存入$500起,至2004年底本息合计$6743.18
2023-07-21 15:34:001

GRE数学几何部分专业术语词汇总结

一、几何部分   1、所有的角  alternate angle 内错角 ue003 corresponding angle 同位角ue003 vertical angle 对顶角ue003 central angle 圆心角 ue003 interior angle 内角ue003 exterior angle 外角ue003 supplementary angles 补角 ue003 complementary angle 余角ue003 adjacent angle 邻角ue003 acute angle 锐角 ue003 obtuse angle 钝角ue003 right angle 直角ue003 round angle 周角ue003 straight angle 平角 ue003 included angle 夹角ue003ue003   2、所有的三角形  equilateral triangle 等边三角形ue003 scalene triangle 不等边三角形 ue003 isosceles triangle 等腰三角形ue003 right triangle 直角三角形ue003 oblique 斜三角形 ue003 inscribed triangle 内接三角形ue003ue003   3、有关收敛的平面图形,除三角形外ue003 semicircle 半圆 ue003 concentric circles 同心圆ue003 quadrilateral 四边形ue003 pentagon 五边形ue003 hexagon 六边形 ue003 heptagon 七边形ue003 octagon 八边形ue003 nonagon 九边形ue003 decagon 十边形ue003 polygon 多边形 ue003 parallelogram 平行四边形ue003 equilateral 等边形ue003 plane 平面ue003 square 正方形,平方 ue003 rectangle 长方形ue003 regular polygon 正多边形ue003 rhombus 菱形ue003 trapezoid 梯形   4、其它平面图形  arc 弧ue003 line, straight line 直线ue003 line segment 线段ue003 parallel lines 平行线ue003 segment of a circle 弧形ue003ue003   5、有关立体图形  cube 立方体,立方数ue003 rectangular solid 长方体 ue003 regular solid/regular polyhedron 正多面体ue003 circular cylinder 圆柱体ue003 cone 圆锥 ue003 sphere 球体ue003 solid 立体的ue003ue003   6、有关图形上的附属物  altitude 高ue003 depth 深度 ue003 side 边长ue003 circumference, perimeter 周长ue003 radian 弧度ue003 surface area 表面积 ue003 volume 体积ue003 arm 直角三角形的股ue003 cross section 横截面ue003 center of a circle 圆心 ue003 chord 弦ue003 radius 半径ue003 angle bisector 角平分线ue003 diagonal 对角线ue003 diameter 直径 ue003 edge 棱ue003 face of a solid 立体的面ue003 hypotenuse 斜边ue003 included side 夹边ue003 leg 三角形的直角边ue003 median of a triangle 三角形的中线ue003 base 底边,底数(e.g. 2的5次方,2就是底数) ue003 opposite 直角三角形中的对边ue003 midpoint 中点ue003 endpoint 端点ue003 vertex (复数形式vertices)顶点 ue003 tangent 切线的ue003 transversal 截线ue003 intercept 截距ue003ue003   7、有关坐标   coordinate system 坐标系ue003 rectangular coordinate 直角坐标系ue003 origin 原点 ue003 abscissa 横坐标ue003 ordinate 纵坐标ue003 number line 数轴ue003 quadrant 象限ue003 slope 斜率 ue003 complex plane 复平面   8、其它  plane geometry 平面几何ue003 trigonometry 三角学ue003 bisect 平分ue003 circumscribe 外切ue003 inscribe 内切ue003 intersect 相交ue003 perpendicular 垂直ue003 pythagorean theorem 勾股定理ue003 congruent 全等的ue003 multilateral 多边的   二、其它ue003ue003   1、单位类  cent 美分ue003 penny 一美分硬币 ue003 nickel 5美分硬币ue003 dime 一角硬币 ue003 dozen 打(12个)ue003 score 廿(20个)ue003 Centigrade 摄氏ue003 Fahrenheit 华氏ue003 quart 夸脱 ue003 gallon 加仑(1 gallon = 4 quart)ue003 yard 码ue003 meter 米ue003 micron 微米ue003 inch 英寸 ue003 foot 英尺ue003 minute 分(角度的度量单位,60分=1度)ue003 square measure 平方单位制ue003 cubic meter 立方米ue003 pint 品脱(干量或液量的单位)ue003ue003   2、有关文字叙述题,主要是有关商业  intercalary year(leap year) 闰年(366天)ue003 common year 平年 (365天)ue003 depreciation 折旧ue003 down payment 直接付款ue003 discount 打折ue003 margin 利润 ue003 profit 利润ue003 interest 利息ue003 simple interest 单利ue003 compounded interest 复利ue003 dividend 红利ue003 decrease to 减少到ue003 decrease by 减少了ue003 increase to 增加到ue003 increase by 增加了ue003 denote 表示ue003 list price 标价ue003 markup 涨价 ue003 per capita 每人ue003 ratio 比率ue003 retail price 零售价ue003 tie 打平
2023-07-21 15:34:081

dna中文全称是什么?

脱氧核糖核酸(英语:Deoxyribonucleic acid,缩写为DNA)又称去氧核糖核酸,是一种分子,双链结构,由脱氧核糖核苷酸(成分为:脱氧核糖、磷酸及四种含氮碱基)组成。可组成遗传指令,引导生物发育与生命机能运作。基因技术基因由人体细胞核内的DNA(脱氧核糖核酸)组成,变幻莫测的基因排序决定了人类的遗传变异特性。人类基因组研究是一项生命科学的基础性研究。有科学家把基因组图谱看成是指路图,或化学中的元素周期表;也有科学家把基因组图谱比作字典。但不论是从哪个角度去阐释,破解人类自身基因密码,以促进人类健康、预防疾病、延长寿命,其应用前景都是极其美好的。人类10万个基因的信息以及相应的染色体位置被破译后,将成为医学和生物制药产业知识和技术创新的源泉。以上内容参考:百度百科-脱氧核糖核酸
2023-07-21 15:34:161

过氧化脲的基本信息

中文名称:过氧化脲 中文别名:过氧化尿素;过碳酰胺;过氧尿素英文名称:Urea hydrogen peroxide英文别名:carbamide peroxide; hydrogen peroxide carbamide; hydrogen peroxide, compounded with urea (1:1); hydrogen peroxide (H2O2), compounded with urea (1:1); hydrogen peroxide-urea compound (1:1); hydroperit; hyperol; ortizon; percarbamide; perhydrit; perhydrol-urea; thenardol; urea, compounded with H2O2; urea, compounded with hydrogen peroxide (1:1); urea, compounded with hydrogen peroxide (H2O2) (1:1); Urea hydrogen peroxide (1 gr tablets), contains 35 wt% H2O2, stabilized; urea hydroperoxide; Urea peroxide; ; hydrogen peroxide - urea (1:1)CAS:124-43-6EINECS:204-701-4分子式:CH4N2O3分子量:92.0541风险术语:R34:; R8:;安全术语:S17:; S26:; S36/37/39:; S45:;物化性质:Melting_point 75-85°C (dec.) Water_soluble 500 g/L (20°C)熔点:75-85℃ (dec.)溶解性:500 g/L (20℃)用途:是洗涤行业中性洗涤剂的重要添加剂上游原料:过氧化氢、过氧化氢、尿素、尿素
2023-07-21 15:34:371

apr和effective annual rate 的区别

1、APR(Augmented Pay Reality)即增强支付现实技术。是支付宝KungFu(空付)技术的一部份。2、APR(Apache portable Run-time libraries,Apache可移植运行库)的目的如其名称一样,主要为上层的应用程序提供一个可以跨越多操作系统平台使用的底层支持接口库。3、年利率。4、质量回顾。5、信用卡里的年利率(Annual percentage rate)。6、英文四月April的缩写。7、电子设计自动化中的自动布局布线(Auto Place and Route)。8、自动功率减小(Automatic Power Reduction) 实际年收益 effective annual yield。计算投资品种年度复合收益的办法。即在本期收益基础上将利息计入本金再投资的年度收益,为计算复利因素的收益概念。
2023-07-21 15:34:502

英文:下雨的过程(60词以上)

In waterclouds, cloud droplets are small drops. They are mostly from continue condensation and colliding compounded lattar. Therefore, in waterclouds, cloud droplets will increase to the size of the rain, we first need to cloud is very thick, cloud droplets dense, moisture content many, so that it can continue to condense growth; Secondly, in the waterclouds inside still need to have strong vertical movement, like this can increase many collisions compounded opportunities. While in thinner and more stable waterclouds, cloud droplets not enough condensation and compounded growth opportunities, can cause cloudy, cloudy day, the general assembly does not rain. In different parts of a cloud, the cloud droplets size within the distribution is different, causing cloud droplets uneven size of the reason for this is that the transfer of moisture in the air around which cloud droplets of evaporation and. That cloud droplets growth factor is congeals and collision and process, in only condensation role, under the situation of cloud droplets size is uniform, but because of the added to make some water vapor cloud droplets increased, plus and and function of the results, the larger cloud droplets continue to grow bigger be rain. Raindrops suffer the effect of gravity and decline, when there are updraft, you will have a upward force is applied in the rain, make its declining speed slowing, and a few small rain may also be brought up. Only when raindrops increases to a certain extent, to fall to the ground, into rain.
2023-07-21 15:34:571

SAT 语法题

,而且device才是DEVISE的名词形式,用devising就不如名词好,应为在SAT中动你好我SAT writing当年考了750还是因为写作太差了,语法题只错了一题,希望
2023-07-21 15:35:062

财务管理的题 急求!

真是把百度知道当成自己家了。
2023-07-21 15:35:252

"be动词"用英文怎么说

123456号线:爱你
2023-07-21 15:35:363

高分子专业英文翻译

引言 聚丙烯酸碱金属盐类是水溶性,多功能展示了聚电解质溶液性质和洗碗机洗涤剂在洗衣多种有用成分。这些聚丙烯酸酯包含任何地方从10至4000个单位以上的重复单体具有结构式:- CHZ“CH(COO)-.从历史上看,聚丙烯酸酯钠作为增稠剂及合成洗涤剂制造商的使用已被建议(1)早在1949年。大约在同一时间,埃德尔森和Fuoss,(2,3)使用钠作为其基础研究模型化合物,说明聚电解质之间的这种简单和溴化钠电解质的根本分歧聚丙烯酸酯。然而,大规模的合成洗涤剂成分聚丙烯酸酯钠商业用途可能没有生效,直到近20年后,从最近公布的专利文献评论(4,5)。在这种不断增长的工业用聚丙烯酸酯在商业和机构清洁产品尽管如此,在不同的功能性利益已发表的文献后,确认他们的复合洗涤剂产品的最终使用性能,充其量,微薄的(6-9)。本文介绍了一些实验研究,以确定下进行模拟洗涤剂使用的条件,这些专业洗涤剂添加剂的多功能效益,以及可能的作用机制基本去污力聚丙烯酸酯播放。实验程序在这项研究中使用的材料聚丙烯酸是从商业(BF古德里奇化工)材料,分析其特点如表一所示,这些被转换成相应的钠盐与氢氧化钠中和至pH值由10.5 andwere使用的范围无需进一步净化。在本报告中聚丙烯酸酯聚合物浓度的基础上。其他材料和试剂的详细情况介绍如下适当的实验程序。
2023-07-21 15:36:114

关于where

in certain areas在某些地区 where 是 in certain areas 的同位语
2023-07-21 15:36:182

老师的英语怎么写

  老师或教授尊称为传授 文化 、科学和技术的人,泛指在某方面值得学习的人。那么,你知道老师的英文怎么写吗?   老师的英文释义:   teacher   mullah   moolvie   moolvee   mulla   老师的英文例句:   学生们接受老师的劝告。   The students take the admonition from their teacher.   这位老师给他的学生们定下高标准。   The teacher sets high standard for his pupils.   要仔细听才能听懂老师讲的课。   Listen carefully so as to follow the teacher. 老师的英语怎么写   一个好老师总是尽力为学生解答。   A good teacher never fails to try his best to answer his students.   珍和玛丽是好朋友,前者是老师,后者是护士。   Jane and Mary are good friends; the former is a teacher, the latter is a nurse.   我的数学老师是一个女老师。   My math teacher is a woman teacher.   学生们惹得老师太生气了,所以老师辞职了。   The students pushed the teacher so much that he resigned.   老师说要推迟讲座,同学都问推到什么时候。老师说,推迟不超过一星期   It will be put off no more than one week.   因此他和老师之前总是有很多麻烦。最后,保罗的老师又给他的父亲抱怨。   So he was always in trouble with his teachers.   他们都很钦佩他们的老师。   They all look up to their teacher.   老师把学生聚集在她周围 。   The teacher gathered her pupils round her.   我谨以此词典献给我的老师,以表示对他的爱戴和感激之情。   To my teacher I dedicate this dictionary in token of affection and gratitude.   这次对我们的英语练习老师将不特别注意拼写和语法,而是着重找使她满意的表达法。   This time the teacher will not mark our English exercises for spelling andgrammar, but she will be looking for pleasing expression.   每逢我们在学习上遇到困难,老师总是耐心辅导。   Whenever we have trouble with our studies, our teachers help us patiently.   他为我向老师求情。   He interceded with the teacher for me.   我们的老师以给学生评分公平著称。   Our teacher is known for her fairness in grading pupils.   老师把她所讲的和第12课联系在一起。   The teacher tied in what she said with Lesson 12.   他与老师争吵就更加重了他的错误。   He compounded his mistake by arguing with the teacher.   老师把他的学生召集起来了。   The teacher gathered his pupils up.   学生们爱他们的老师。   The pupils love their teacher.   老师给我们讲了他在英国的经历。   The teacher told us his experiences in England.   她依然珍藏着老师送给她的钢笔。   She still treasured the pen the teacher gave her.   一个学生怎么能对老师这样无礼地讲话?   How could a student cheek his teacher like this?   学生们不应不尊重他们的老师。   The students should not dishonour their teachers.   老师因为她在上课时说话而严厉申斥她。   The teacher came down on her for talking in class.   老师说的话使学生们都感动了。   What the teacher said touched all the students.   这位老师总是为这样那样的事责备学生们。   The teacher is always at the pupils for one thing or another.   我找(他)说话的那个人原来是我们的新老师。   The person I spoke to turned out to be our new teacher.   老师根据年龄和高矮将学生分成一对一对。   The teacher paired off his students by age and height.
2023-07-21 15:36:271

公司理财问题~英语~有答案 求解答步骤~~

是的发生的冯绍峰是
2023-07-21 15:36:362

英文数学题,关于future value of an annuity: sinking funds

有没有复利啊
2023-07-21 15:36:432

why not write down our mistake on the book是否正确

首字母要大写,最后要附上疑问号“?”其它的正确。Why not write down our mistake on the book?
2023-07-21 15:36:522

networking是什么意思

  networking英 [u02c8netwu025c:ku026au014b] 美 [u02c8netwu025c:rku026au014b]  n.网络化; [计] 网络系统; 人际网;  [网络]网络通信; 联网; 人脉网络;  [例句]For triple jumpers, the traditional hurdles of academics, networking, and job hunting are compounded by language, visa, and cultural barriers.  三级跳健将不仅要面对学术、人际网络和求职等传统障碍,还要跨越语言、签证和文化障碍等壁垒。  [其他]形近词: nonworking
2023-07-21 15:37:131

什么是美

心灵最美
2023-07-21 15:37:222

计算澳洲股票指数的连续复利增长利率

不清楚~~
2023-07-21 15:37:313

compound semiannually是什么意思

compound semiannually例句$10000 is invested at 10 percent simple annual interest, compound semiannually,what is the balance after 1 year?大概意思: 年利率是10%25, 半年复利,一年后%2410,000是多少钱?Oxygen enters into many compound bodies.氧是许多化合物的组成部分。Air is a mixture, not a compound of gases.空气是气体的混合物,不是化合物。Rose is a plant with compound leaves.玫瑰是复叶植物。"Broad-shouldered" is a compound word."Broad-shouldered"是个复合字。
2023-07-21 15:37:391

请教一道数学题。。。

E
2023-07-21 15:37:474

What is the effective annual rate (EAR) of interest if a nominal rate of 6% is compounded twice per

EAR = ( 1 + APR / m ) ^ m - 1 = ( 1 + 6% / 2 ) ^ 2 - 1 = 0.0609 = 6.09%
2023-07-21 15:37:552

八年级英语作文 假设2008年奥运会已经开始了,你做为一名奥运会的志愿者向外国朋友介绍一下北京8

think hosting the Olympic games 2008 will have a positive effect on the Chinese economy. First, there will be millions of foreigners come to China to see the Olympic Games, these foreginers will consume during their staying in China, for example, they eat foods in restaurants, live in hotels, they are like those travellers who visits China. Second, the Olympic games creates more job opportunities for local workers. Olympic games ususlly requires a standard of the gymnasiums for the sport games, so there will be more building needed. Third, the past data show most countries" economies improved after hosting an Olypmic games.
2023-07-21 15:38:054

解释一下什么是美?

心灵美就好
2023-07-21 15:38:252

求关于日本动漫文化的介绍,要英文,简短

Some other religious customs of Shinto Japanese allude to unknown origins, and in each case a close relation to Jewish religious tales and traditions can be found. Take for example, both the entrances to Shinto shrines and Jewish synagogues hold golden bells that are to be rung before entering or engaging in prayer. The floor plan of the Shinto shrine is very similar to that of a Jewish tabernacle. The "torii" or "gate" that is the entrance to a Shinto shrine, is almost exactly the same design as the "taraa" gate / entrance to a Jewish tabernacle. At a traditional Shinto festival "Ontohsai" the ancient tradition was to sacrifice seventy-five deer, followed by the symbolic (simulated) sacrifice of a young boy who is saved shortly before death by another priest playing the role of a "kami" or "god (spirit)," this is comparable to the Hebrew story of Abraham"s near sacrifice of Isaac. This similarity is compounded by the fact that the Hebrew ceremony also called for a sacrifice of seventy-five sheep. However, since there were originally no sheep in Japan, it is believed that deer were substituted because they are kosher; never mind the fact that animal sacrifice plays absolutely no role in any other Shinto traditions and seems to go against the very nature of Shinto itself (it was eventually outlawed in the Meiji era, and is now simulated with stuffed animals). And finally, a rumor that the holy mirror in the Shinto shrine of Ise contains an actual Hebrew phrase (scripted in Hebrew). On three separate occasions, and by three unrelated people(2), this phrase has been translated as the Hebrew name of God, meaning "I Am That I Am."Some Hebrew social traditions also may have found their way into Japanese culture, such as bowing as a form of greeting, the imagery of mountains as holy places of enlightenment and spiritual discovery, similar styles of folk-dancing amongst both Hebrew and Japanese peoples, and the sowing of salt before an important (or religious) undertaking as a symbol for purification. Not to mention the similarities between the royal crest of the Japanese imperial family carrying the exact same design as the seal over Herrod"s Gate in Jerusalem (one of the most important entrances to the holy city).With all of these findings to consider, one can easily see why the influence of Jewish mysticism is so strong in Japanese anime. And the introduction of Christianity to Japan in 1549 by Jesuit Francis Xavier, and its reintroduction in 1859 after Japan"s two centuries of seclusion, has also served its part in shaping the religious and social lives of the Japanese. Although true freedom of religion did not show itself in Japan until the Allied occupation in 1945, it has long been the nature of Shinto to tolerate and even absorb certain aspects of other religions(3). Shinto-ized versions of Christian angels and demons have found their way into Japanese art and story. Naturally, with the strong apocalyptic tendencies of Japanese entertainment, one can see how the Christian idea of angels as saviors, while also being juxtaposed as the bringers of Armageddon, would be a fascinating subject for the Japanese. One example can be found in "Wish," a Japanese manga by the leading female artist group CLAMP, which tells the story of a young angel, Kohaku, sent to earth to find another missing angel, Hisui. While these angels are depicted in the traditional Christian manner (white wings, halos, white robes, etc…) they are assigned very pagan roles. There are four archangels, but they are not the typical four found in Christian mythology, instead they are given Japanese names, and represent the elements of nature: fire, wind, water, and earth. Kohaku himself represents a fifth element, that of spirit, and he is assigned with the role of "hatching" new angels from the "tree of life," (possibly a Qabbalistic association with Jewish mysticism). Coincidentally, God"s "messengers" are hares, a traditional Shinto myth animal-association with communication, sending warnings or messages.A situation which illustrates the angel as destructor can be found in the anime "Neon Genesis Evangelion." These "angels" are certainly not represented in the typical Christian fashion as far as looks are concerned - they are definitely given a Japanese flavor by being portrayed as giant mecha - but their arrival in Neo-Tokyo is seen as a sign of the coming of the destruction of the earth.These current trends of including Western religious symbolism in Japanese tales do seem on the surface to be not much more than a sprinkling of the exotic to Japan"s "Western-crazed" fads, but I strongly believe it to be a reflection of distant past influences to their religious and social traditions, the memory of which may have been lost for many generations.(2) The three people were: Arinori Mori (the cultural minister of Japanese education, culture, and science, around 1899), Dr. Sakon (a professor at Aoyama-Gakuin University, around 1947), and Yutaro Yano (a Shinto priest, in 1978). Yutaro Yano actually copied by hand the scribing on the back of the holy mirror, and this picture can be found in his book which was handed down through his Shinto tradition to his daughter who has recently published it. The drawing clearly shows the Hebrew phrase, but it is not known if the drawing is an accurate representation due to the fact that few other people have been allowed to look at the holy mirror.(3) In Shinto, notions of "purity" and "cleanliness" are very important. Blood is considered unclean, as well as artifacts associated with death or corpses, therefore the tasks of funeral rites and burials were meted out to Buddhists, who have no strong aversion to dealing with death. This tradition continues into the present day.参考:http://www.essortment.com/all/animejapanchri_rfdy.htm
2023-07-21 15:38:331

求一篇8千字左右的外文文献和翻译 关于创新型城市评价的 打点擦边球的也可以!

用SOSO收哈吧!
2023-07-21 15:38:424

Gil Melle的《Golden Age》 歌词

歌曲名:Golden Age歌手:Gil Melle专辑:Gil"S GuestsU know the time is rightU can see the light「Golden」作词∶JAY"ED作曲∶BACHLOGIC/JAY"ED歌∶JAY"EDDo what I"m gonn do まぶしく光るIt"s time to shine (This time is golden)天と地の差があるこのゲームの中で(Choose from heaven or hell)过去から未来へ チクタク时は刻んでその中 自分だけの路を探す my way成功や栄光とは程远い抜けれない现状がむしゃらに胸焦がす あきらめずに yes we movin"The time is now 2 change the game闇の中に见えた一寸の光(It"s golden)Can"t let it slip, life only comes once形势逆転のチャンス 见逃すなtime 2 get itDo what I"m gonn do まぶしく光るIt"s time to shine (This time is golden)天と地の差があるこのゲームの中で(Choose from heaven or hell)昨日から明日へ 时间もまた流れ积もらせてくpain をgainこの路 赌けてる证明 ayeIt"s time 2 go go now everythings golden here火が着く导火线 got me fire burningThe time is now 2 change the game鸣らすスピーカーから流れるmusic is goldenCan"t let it slip, life only comes once一攫千金のチャンス 见逃すなtime 2 get itDo what I"m gonn do まぶしく光るIt"s time to shine (This time is golden)天と地の差があるこのゲームの中で(Choose from heaven or hell)思い描いてくblueprint は十人十色形が违う野望 それぞれ目指して暗いトンネル抜ければEverythng you see, you will see will shineYou gatta feel the lightDo what I"m gonn do まぶしく光るIt"s time to shine (This time is golden)Can you see the light天と地の差があるこのゲームの中で(aye aye…)【 おわり 】http://music.baidu.com/song/8535662
2023-07-21 15:32:141

解读在Activity中使用Handler的内存泄漏问题

在开发过程中,我们经常会遇到这样一种情况,当在Activity中使用handler时,直接创建匿名内部类,会得到一个警告,意思是可能出现内存泄漏,推荐使用静态内部类。这也是面试时经常被问的一个问题,现在,我们就来解读一下为什么会出现这个警告,以及如何改进。 我们知道,Handler在使用时,通过post或者send的方式,可以把消息发送到MessageQueue队列中,期间Looper循环取出消息去交给对应的handler所在的线程去处理,有些消息还加上了延时发送,这些原因就可能会导致一个问题:当Activity销毁了,而主线程中一直运行的Looper会持有handler的引用,而我们在创建handler的时候用的是非静态匿名内部类,所以此handler会持有Activity的引用,导致Activity不会被回收,出现了内存泄漏。因此,编译器才会给我们一个这样的警告。 可能有些朋友会疑惑为什么Looper会持有handler的引用,这就要看源码了: 不管我们调用post还是send方式发送消息,最终调用的都是sendMessageAtTime方法,而在这个方法中最后调用了enqueueMessage方法,我们来看一下Handler中enqueueMessage的源码: 可以看到msg.target被赋值给本类对象,也就是我们在activity中创建的handler。也就是说我们在发送Message时,这个消息就把handler给封装进了自己的内部,只要Message对象不被销毁,此handler对象就会一直存在,而此Message会一直存储在MessageQueue消息队列中,直到Looper取出交给handler处理。可以看到Looper的loop()方法的源码如下: 交给handler处理完后会回收该消息: 这样Looper才能断开与Handler对象的引用,直到这个时候,外部的Activity才可能被回收。因此,在使用handler的时候,不建议再这么使用了。 那么我们该怎样正确的使用呢? 可以将Handler声明为Activity里的一个静态内部类,内部创建一个WeakReference,将Activity实例用弱引用存起来,这样就可以了。如果为了方便复用,也可以将Handler单独提出来作为一个类,原理相同。如下: 采用静态内部类或者单独提出来的作用是让handler对象不再持有activity对象的引用,而对外部activity的使用都是采用弱引用的方式,当垃圾回收器发现此activity只有弱引用时,就会回收它,这样就不会导致内存泄漏了。 好了,这个问题就解读到这里。下面我们再来看看一些相关的题外知识。 我们平常在使用Looper的时候,必须先调用Looper.prepare()方法,因为此方法会初始化一个Looper(并初始化一个MessageQueue)并和当前线程绑定,只有这些初始化工作完成后,后边我们才能使用这些东西;然后需要调用Looper.loop()把MessageQueue消息队列在这个线程中运行起来。下面是prepare方法和创建looper实例的源码,其中sThreadLocal.set(new Looper(quitAllowed)实现了当前线程和looper的绑定。 但是平时我们在Activity中使用时,并未先调用prepare然后调用loop方法,为什么呢?我们来看看ActivityThread的main方法,此方法是应用程序的入口,源码如下: 根据源码得出,原来APP在启动的时候,系统已经自动为我们做了相关的初始化工作,这里的ActivityThread就是主线程(UI线程),这样我们在Activity中就可以直接创建handler使用了。当然我们也可以创建自己的Looper,下面我们来演示子线程中的Handler和主线程中的Handler的使用。 老样子,我们使用静态内部类,提供两个构造函数,无参的给主线程创建handler,有参数的给子线程用,只需提供一个在子线程中初始化的Loope即可。在handleMessage回调方法里打印出当前线程。 然后在主线程和子线程中分别创建各自的实例: 然后在另外一个子线程中使用两个handler发送消息: 可以看到打印的日志: 由此可以看出不管handler是在哪个线程中使用,发送的消息都会存储在创建此handler时对应的Looper所属的线程中(MessageQueue中),并最后交给这个handler的handleMessage方法进行处理,这样实现了线程之间的通信。最后总结: 1.在Activity中直接使用非静态内部类的Handler,提示会出现内存泄漏,因为非静态内部类对象会持有外部类对象的引用,如果此内部对象一直被引用着,就会导致外部类对象不会被回收。要么声明为静态,要么提出去单独作为一个文件类。并对Activity采用弱引用的方式来使用。 2.应用程序在启动阶段已经替我们做了Looper的初始化工作,我们在Activity中可以直接使用Handler。但是如果想在子线程中创建handler,必须先调用Looper.prepare()方法,然后调用Looper.loop(),这样才能使用handler。 3.线程--Looper--MessqgeQueue是一一对应的,由msg.target可以得出一个线程中可以创建多个handler,handler的使用(发送消息)可以在任何线程中,但是消息最终都是在创建此handler时对应的Looper所属线程中被处理的。这样也就实现了线程间通信。
2023-07-21 15:32:171

英语之中除法的表达

1) 10 divided by 2 10被2除 也就是 10除以2和除法运算有关的只有这一词组2) an hour is divided into 60 mins一个小时可分为60分钟来算the city is divided into five districts一个城市划分为五个区divided into有分成,分流,划分(区域)的意思有区别吧?
2023-07-21 15:32:173

Dr,Mr,Miss,Mrs,Ms.分别是什么意思

Dr.是Doctor的缩写,意思是博士或医生,例如:Dr.Lee 李博士或李医生Mr.是mister的缩写,意思是先生,例如:Mr.Smith史密斯先生Miss是指未婚的女生,例如:Miss Sherry雪莉小姐Mrs是mistress的缩写,意思是指已婚女士,如:Mrs.Lee李女士Ms也是miss的缩写,但这种形式可在你不确定对方是否已婚的情况下使用。
2023-07-21 15:32:185

HandlerThread原理与应用

u2003在理解了Handler的原理之后,我们知道在一个子线程中创建一个Handler不能缺少了Looper.prepare()和Looper.loop()两个方法,具体的原因这里不再赘述,不熟悉原理的可以先看下另一篇文章 Handler的原理解析 . 本篇文章主要是讲解HandlerThread的使用的。 u2003首先HandlerThread是继承于Thread类的,所以本质上HandlerThread就是一个线程,接下来就详细的去看一看,这是怎样的一个线程? u2003首先,先看下它的构造函数: u2003既然是线程,那么最重要的当然是run方法来,看完了run方法,相信你也就明白HandlerThread的用途了! u2003怎么样,这是不是和我们之前在子线程中创建Handler一样,首先是Looper.prepare(),接着是new Handler(), 最后是Looper.loop()。等等,这里并没有创建Handler啊!别急,我们先一步一步地看看run方法再说为什么没有创建Handler。 u2003通过查找发现到一个getLooper()的方法,该方法返回了当前线程的mLooper对象,还记得Looper是在哪里进行赋值的吗?在线程的run方法里,所以当线程启动之后才能创建Looper并赋值给mLooper,这里的阻塞就是为了等待Looper的创建成功。同时该方法是用Public修饰的,说明该方法是提供外部调用的,Looper创建成功提供给外部使用。 u2003最后在对象销毁前,调用下面的方法退出Looper循环 u2003quit方法实际是调用MessagQueue的removeAllMessagesLocked,移除所有延迟和非延迟的消息, u2003quitSafely方法调用的是removeAllFutureMessagesLocked方法,该方法只清除延迟的消息,非延迟的消息 还是会进行分发处理。 u2003HandlerThread分析完啦,是不是有点蒙,自始至终都没有出现Handler,HandlerThread要怎么用呢? u2003下面我们就通过一个Demo来说明下HandlerThread是怎么用的?
2023-07-21 15:32:101

regulation issue是什么意思

regulation issue 监管问题regulation 英[u02ccregjuu02c8leu026au0283n] 美[u02ccru025bɡju0259u02c8leu0283u0259n] n. 规则; 管理; 控制; 规章; adj. 规定的,必须穿戴的,必须使用的; [例句]The European Union has proposed new regulations to control the hours worked by its employees欧盟已经就其雇员工作时间的控制问题拟定了新的规章。[其他] 复数:regulations
2023-07-21 15:32:091

new soul中文谐音

新灵魂
2023-07-21 15:32:082

子线程新建Handler为什么会报错

我们从报错开始追踪:“Can"t create handler inside thread that has not called Looper.prepare()” —-》 错误日志就来自Handler的默认构造方法,源码如下:/*** Default constructor associates this handler with the queue for the* current thread.** If there isn"t one, this handler won"t be able to receive messages.*/public Handler() {if (FIND_POTENTIAL_LEAKS) {final Class<? extends Handler> klass = getClass();if ((klass.isAnonymousClass() || klass.isMemberClass() || klass.isLocalClass()) &&(klass.getModifiers() & Modifier.STATIC) == 0) {Log.w(TAG, "The following Handler class should be static or leaks might occur: " +klass.getCanonicalName());}}mLooper = Looper.myLooper();if (mLooper == null) { //当mLooper为null时就会报这个异常throw new RuntimeException("Can"t create handler inside thread that has not called Looper.prepare()");}mQueue = mLooper.mQueue;mCallback = null;}—-》 那么我看下myLooper这个方法:/*** Return the Looper object associated with the current thread. Returns* null if the calling thread is not associated with a Looper.*/public static Looper myLooper() {return sThreadLocal.get();}很明显这里只是从sThreadLocal这个当前线程的对象身上获取到一个Looper。 —-》 那么我们需要知道这个Looper是什么时候被赋值到当前线程的对象上面的,Looper类中有一个prepare方法/** Initialize the current thread as a looper.* This gives you a chance to create handlers that then reference* this looper, before actually starting the loop. Be sure to call* {@link #loop()} after calling this method, and end it by calling* {@link #quit()}.*/public static void prepare() {prepare(true);}private static void prepare(boolean quitAllowed) {if (sThreadLocal.get() != null) {throw new RuntimeException("Only one Looper may be created per thread");}sThreadLocal.set(new Looper(quitAllowed));//在这里创建一个Looper对象并赋值给当前线程}—-》 那么这个Looper.prepare()方法是什么时候在哪里调用的呢? 当我们在主线程中创建Handler对象的时候没有问题,是因为主线程会自动调用Looper.prepare()方法去 给当前主线程创建并设置一个Looper对象,随意在Handler构造函数中从当前线程的对象身上拿到这个Looper。 但是子线程中并不会自动调用这个方法,所以要想在子线程中创建Handler对象就必须在创建之前手动调用Looper.prepare()方 法,否则就会报错。
2023-07-21 15:32:031