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摩擦焊与搅拌摩擦焊是一回事吗

2023-07-27 06:45:50
共4条回复
okok云

搅拌摩擦焊与摩擦焊不是一回事。

搅拌摩擦焊与传统摩擦焊一样也是利用机械力和摩擦热作为热源实现焊接的。不同的是,搅拌摩擦焊过程中,由一个柱形带特殊轴肩和搅拌针的搅拌头高速旋转着缓慢插入待焊工件的接缝处,搅拌头轴肩与工件表层摩擦生热,使搅拌头邻近区域的材料软化,但此温度一般不会达到被焊材料的熔点。

摩擦焊一般适用与焊接的轴类零件。而搅拌摩擦焊则不受材料的形状限制。

康康map

摩擦焊于搅拌摩擦焊完全不同的。

搅拌摩擦焊,关键是有搅拌摩擦焊接工具(搅拌头)。

相同之处是,利用摩擦热与塑性变形热作为焊接热源。

不同之处在于搅拌摩擦焊焊接过程是由一个圆柱体或其他形状(如带螺纹圆柱体)的搅拌头伸入工件的接缝处,通过搅拌头的高速旋转,使其与焊接工件材料摩擦,从而使连接部位的材料温度升高软化,但不需要达到熔点。然后将材料搅拌在一起来完成焊接的。

可乐

摩擦,一般都是圆柱,高速转动,磨红了,一顶。

搅拌,是一个能走的,类似于钻头、铣刀、的刀头。

搅拌摩擦,还是搅拌焊。

牛云

摩擦焊机原理(连续驱动摩擦焊):

在压力作用下,通过待焊

工件的摩擦界面及其附近温度

升高,材料的变形抗力降低、

塑性提高、界面氧化膜破碎,

伴随着材料产生塑性流变,通过界面的分子扩散和再结晶而实现焊接的固态方法。

摩擦焊通常由如下四个步骤构成:

1.机械能转化为热能

2.材料塑性变形

3.热塑性下的锻压力

4.分子间扩散再结晶

摩擦焊优势:

摩擦焊相对传统熔焊最大的不同点在于整个焊接过程中,待焊金属获得能量升高达到的温度并没有达到其熔点,即金属是热塑性状态下实现的类锻态固相连接。

相对于传统熔焊,摩擦焊具有焊接头质量高,能达到焊缝强度与基本材料等强度,焊接效率高、质量稳定、一致性好,可实现异种材料焊接等。

Friction welding machine principle:

Under pressure, to be welded by

Friction interface temperature of the work piece and its vicinity

Increased deformation resistance of the material is reduced,

Plasticity increased interfacial oxide film broken,

Along with the material to produce plastic flow interface by molecular diffusion and Re crystallization Solid-state welding method.

Friction welding is generally constituted by the following four steps:

1. the mechanical energy into heat

2. Plastic Deformation

3. The thermoplastic forging force under

4. molecular diffusion and re crystallization

Friction Welding Advantages:

Compared with the traditional friction welding fusion biggest difference is that the entire welding process, the metal to be welded to gain energy to reach elevated temperatures did not reach its melting point, that is, the metal is at a thermoplastic state class that implements the forged solid connection.

Compared with traditional fusion welding, friction welding with high quality welded joints, weld strength and intensity to achieve the basic materials, high welding efficiency, stable quality, consistency, enabling dissimilar material welding.

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电焊机电流10档位如何调

有三个档,每个档开多大
2023-07-26 00:19:412

这台氩弧焊能改电焊机吗?怎么改

能,摘来,氩气带那里在里面换插头
2023-07-26 00:19:527

点焊英语怎么说

point wield
2023-07-26 00:20:442

焊机正负极接反对焊接质量有什么影响

应按工艺要求的接法使用焊机。当使用直流电焊机时,若焊件接正极,焊条接负极时叫正接。反接与之相反。正接时,工件为阳极,焊条为阴极,阳极比阴极温度高电流大,所以正接时熔深大;反接的特点是电弧稳定、飞溅较小、质量稳定。一般采用反接法施焊,在焊接厚板时,为增加熔深也可采用正接法。焊机工艺评定是在规定的正、反接的情况下得出的结论,如接错使用的参数就不对了,焊接质量肯定有问题,会产生焊接缺陷。
2023-07-26 00:20:543

什么是摩擦焊

摩擦焊机原理:在压力作用下,通过待焊工件的摩擦界面及其附近温度升高,材料的变形抗力降低、塑性提高、界面氧化膜破碎,伴随着材料产生塑性流变,通过界面的分子扩散和再结晶而实现焊接的固态方法。摩擦焊通常由如下四个步骤构成:1.机械能转化为热能2.材料塑性变形3.热塑性下的锻压力4.分子间扩散再结晶摩擦焊优势:摩擦焊相对传统熔焊最大的不同点在于整个焊接过程中,待焊金属获得能量升高达到的温度并没有达到其熔点,即金属是热塑性状态下实现的类锻态固相连接。相对于传统熔焊,摩擦焊具有焊接头质量高,能达到焊缝强度与基本材料等强度,焊接效率高、质量稳定、一致性好,可实现异种材料焊接等。Friction welding machine principle:Under pressure, to be welded byFriction interface temperature of the work piece and its vicinityIncreased deformation resistance of the material is reduced,Plasticity increased interfacial oxide film broken,Along with the material to produce plastic flow interface by molecular diffusion and Re crystallization Solid-state welding method.Friction welding is generally constituted by the following four steps:1. the mechanical energy into heat2. Plastic Deformation3. The thermoplastic forging force under4. molecular diffusion and re crystallizationFriction Welding Advantages:Compared with the traditional friction welding fusion biggest difference is that the entire welding process, the metal to be welded to gain energy to reach elevated temperatures did not reach its melting point, that is, the metal is at a thermoplastic state class that implements the forged solid connection.Compared with traditional fusion welding, friction welding with high quality welded joints, weld strength and intensity to achieve the basic materials, high welding efficiency, stable quality, consistency, enabling dissimilar material welding.
2023-07-26 00:21:102

热风回流焊接机用英语怎么说

热风回流焊接机的英文翻译_百度翻译热风回流焊接机Hot air reflow soldering machine 全部释义和例句试试人工翻译machine_百度翻译machine 英[mu0259u02c8u0283i:n] 美[mu0259u02c8u0283in] n. 机器,机械; 机械般的人; 核心;
2023-07-26 00:21:171

Nirvana的《Downer》 歌词

歌曲名:Downer歌手:Nirvana专辑:NirvanaDowner英文歌词第一站Put your sincerityI"ve got a royaltyDefending your countryWish awayI"ve had a lobotomySave your familySurrealistic fantasyBad boyFight!All we know isRestitutionLiving out yourDate of futureThere"s a hopePlease show me fasterDon"t forgetTo pass a riotSomebody served a dinnerMuch like I amI know I can"tMake enough althoughIf you go alongI sing your songSickening pessimistsPicketing massesSeparated communistsApocalyptic bastardsRinkydink GodFor putting me on this EarthBeing very frivolousDeath in mindNurse!All we know isRestitutionLiving out yourDate of futureThere"s a hopePlease send it fasterDon"t forgetTo pass a riotSomebody served a dinnerMuch like I amI know I can"tMake enough althoughIf you go alongI sing your song.http://music.baidu.com/song/8204861
2023-07-26 00:17:201

榆钱的介绍

1、榆钱是榆树的果实,因其外形圆薄如钱币,故而得名,民间有吃了榆钱可有“余钱”的说法。 2、榆钱虽不起眼,却含有丰富的营养物质,不仅好吃,而且也可防病保健。在饥荒之年,是一种救人性命的充饥食粮。 3、产于中国,在寒温带、温带及亚热带地区具有分布,可以食用、药用和绿化。
2023-07-26 00:17:221

echo在爱情里什么意思

echo在爱情里是想现任的意思。距离和时间足以让你尽快忘记前任,如果你们在同一家公司,平时低头不见抬头见则是在所难免的事情,如果真的见到了,那就说几句客气话,并且避免去以前你们常去的地方。如果TA生病了,则不要表示任何关心,以免对方认为你有复合的意思。如果不行的话,则可以申请换到其他部门或工作地点。感情是最难控制的事情,情绪失控的时候往往没有任何理由,甚至会出现爱恨交织的矛盾局面。其实自己知道应该怎么做,但还是会不停犯错,然后反复给自己找借口。失恋以后就不要再自欺欺人了,爱就是爱,不爱就是不爱,如果总是暗示自己你们还可以做朋友,只会让已经死去的感情再度复燃,但复燃之后它依旧不会持续太久。忘记前任的方法:无论是男人还是女人,无论是主动分手还是被甩,失恋总会给自己带来打击。如果你是一个性格内向或意志力很强的人,此时强制性地压抑自己的情绪只会让自己越来越难受。可以出去运动一下,出一身汗之后洗个热水澡,然后通过写日记的方式来表达自己的心情,这至少可以让自己舒服一点。很多人在分手之后因为感觉自己忘不了以前的美好,所以往往会难以自拔的跟前任发生肌肤之前,但你知道吗,从执手相握到拥抱亲吻,发展的后果一望可知。等到梦醒时分,许多话和事就都说不得和做不得了,麻烦也将接踵而至。
2023-07-26 00:17:241

在线学习平台的相关介绍

1、先进的产品设计理念SmartLearning 在产品设计中融入了先进的人力资源和知识管理理念,包括学习资源计划、能力素质模型、岗位培训体系、效果评估体系、知识管理体系、目标激励体系。2、强大和可配置的功能SmartLearning 是国内第一套能够对学习型组织各项学习活动进行全流程管理的软件,涵盖学习资源计划、知识管理、传统培训管理、在线学习(eLearning)管理、积分和激励管理等管理和应用领域。通过强大的流程配置和模块配置功能,SmartLearning能够为客户提供高适用性的应用方案。3、灵活的应用部署方案SmartLearning 针对学习型组织不同发展阶段的管理需要提供相应匹配的版本选择,同时提供高度灵活的部署方案,可以满足从小规模使用一直到大型应用的全面需求。4、快速与现有IT系统集成SmartLearning 提供能够与第三方系统集成的通用组件与标准接口,能够快速实现与客户现有门户网站、OA、HR、目录服务(AD/Domino)、邮件服务、短信服务等系统的单点登录(SSO)和数据交换。5、对国际标准的全面支持SmartLearning 全面支持AICC(Aviation Industry CBT Committee)、ADL SCORM(The Sharable Courseware Object Reference Model)1.2、ADL SCORM2004(1.3)国际标准,并通过全面的兼容性测试和客户实际应用检验。同时提供对多种语言版本的支持,如英语、日语等。6、经过检验的安全性设计SmartLearning 的安全架构全面包括系统应用的五个层次,即:部署、数据、传输、应用和审计。其它特色的安全特性有:防SQL注入、防Cookie欺骗、防不安全文件上传,可配置的IP地址绑定等。7、严谨的权限管理机制SmartLearning 内置三级访问权限控制:功能菜单、数据分类和读写操作。用户授权以角色为中心,支持多级授权和集团管理模式。客户根据自身的管理特点可快速自定义系统访问权限配置。8、标杆客户的一致选择2009年5月,新为软件的客户数量突破3000家,数百万用户通过新为软件平台接受学习服务,SmartLearning已被越来越多的包括国家部委在内的政府机构、世界五百强和中国五百强企业、国内顶尖高校和教育培训构选用。
2023-07-26 00:17:291

榆钱的读音榆钱的读音是什么

榆钱的读音是:yúqián。榆钱的拼音是:yúqián。注音是:ㄩ_ㄑ一ㄢ_。结构是:榆(左右结构)钱(左右结构)。榆钱的具体解释是什么呢,我们通过以下几个方面为您介绍:一、词语解释【点此查看计划详细内容】榆钱,榆钱儿yúqián,yúqiánr。(1)口∶榆荚,圆小似铜钱。二、引证解释⒈榆荚。因其形似小铜钱,故称。引唐施肩吾《戏咏榆荚》:“风吹榆钱落如雨,绕林绕屋来不住。”金董解元《西厢记诸宫调》卷一:“满地榆钱,算来难买春光住。”清卓尔堪《醉花阴》词:“风日近清明,几片榆钱,都算_儿俸。”孙犁《正月》:“十岁上,她已经能够烧火做饭,拉磨推碾,下地拾柴禾,上树掳榆钱。”三、国语词典榆荚。因其外貌如钱而小,故称为「榆钱」。四、网络解释榆钱榆钱:植物名榆钱:周亮工诗作关于榆钱的诗词《风送榆钱入户》《弥撒战歌·榆钱满地莫医贫》《早夏·满地榆钱未扫除》关于榆钱的诗句春风十万散榆钱两岸榆钱恐辜柳絮与榆钱关于榆钱的成语桑榆暮景桑榆之年桑榆末景豆重榆瞑榆木脑壳日薄桑榆景入桑榆收之桑榆关于榆钱的词语桑榆末景一钱不直望杏瞻榆桑榆之年桑榆暮景豆重榆瞑榆木脑壳榆瞑豆重景入桑榆榆枋之见关于榆钱的造句1、傍晚的时候榆钱子去了一趟城里,带给马酒仙两个消息,一个是酒仙的爷病重,第二个是泡桐的井终于打出了水。2、这第三例,名曰‘生财宝",乃用糖拌榆钱,稍加腌制,再炒马鞭切片,甚是大补,与酒同饮,更是效力斐然3、春天来了,金黄色的蒲公英在路边耀目,深紫的荞璐璐花在桃树下送情,蜜蜂在粉红色的杏花间歌唱,蝴蝶在淡蓝的天空中翩翩起舞,金翅鸟在刚放绿叶的柳树上细语,嫩黄的榆钱在春风中颤动,山鸡在初醒的山岗上欢笑。4、妈妈将孩子们带回家的榆枝上的榆钱儿撸下来,用水洗净,掺在棒子面中贴饽饽。5、但是我没有零花钱,只好春天的时候揪个槐花呀,捋点榆钱呀过过嘴瘾。点此查看更多关于榆钱的详细信息
2023-07-26 00:17:301

求 Sucker- Jonas Brothers MP3?急求

MP3下载地址 提取码:qaxs
2023-07-26 00:17:371

榆钱是什么?榆钱怎么吃?

对于现在年轻人来说很多东西都是不认识的,比如说榆钱,榆钱是一种食物,榆钱其实具有很好的食用价值,可以做成很多不同的食品,不仅如此,榆钱的药用价值也是很高的,现在主要是作为一种茶或者是当药材使用,很多人会好奇,榆钱到底是什么呢?榆钱有什么功效和作用?榆钱怎么吃呢?1、榆钱是什么榆树的果实呈扁圆形,中间有一个厚一点的芯,有点像小铜钱,俗称“榆钱”。榆钱口感软嫩,味微辛、性平,入心、脾、肺经,有清热降火、消食下气、利水消肿、安神健脾的功效,可以治疗失眠症、神经衰弱、食欲不振、小便不利、女性白带增多等症。2、榆钱食疗法1.治疗失眠症【材料】榆钱100~200g,小米50~100g,酸枣仁(炒)15g。【用法】将榆钱洗净、酸枣仁捣烂。把酸枣仁装进纱布袋中,放在锅里加适量清水,大火烧开,继续煮10分钟,再加入小米和榆钱,再次煮沸后改小火煮15~20分钟。一天吃一次,榆钱、酸枣仁养心安神,小米滋阴安神,这道粥可以辅助治疗失眠症。2.治疗食欲不振【材料】榆钱300~500g,新鲜的猪瘦肉100g,黑木耳3朵。香葱1根、生姜3片,花生油、香油、食盐、酱油各适量。【用法】将黑木耳放进盆里,加清水泡发,洗净、撕成小块。猪瘦肉放进冰箱里冻45~50分钟,冻至半硬的时候取出来,切成细长的肉丝,加酱油、食盐腌渍。香葱洗净,和生姜一块切成碎末。在菜锅里加适量花生油烧热,放入葱姜末爆香,倒入肉丝翻炒两下,再加入榆钱、黑木耳炒熟。一天吃一次。榆钱健脾助消化,猪瘦肉补肾补血,黑木耳补肾养血、润肺止咳。这道菜有促进消化、补肾养血的作用,可以辅助调理食欲不振、营养不良等症。3、榆钱的吃法(1)生吃。把新鲜的榆钱洗净放在盘里,加入白糖吃,简单方便。若喜吃咸食,可放入盐、酱油、香醋、辣椒油、葱花、芫荽等作料。(2)煮粥。将榆钱洗净,以葱花或蒜苗炒后加开水烧开。下大米或小米煮粥,米将熟时再放榆钱继续煮5-8分钟。加适量调料,即成榆钱粥。(3)笼蒸。先将榆钱洗净,拌以玉米面或白面做成窝头,上笼蒸半小时即可起锅。或将洗净的榆钱拌上面粉,搅拌均匀,直接上笼蒸熟,放入调料,吃起来香甜柔软,口感极佳。(4)做馅。将榆钱洗净、切碎,加虾仁、肉或鸡蛋调匀后,包水饺、蒸包子、卷煎饼,清新爽口,美味无穷。(5)制酱:老了的榆钱可以制酱。将榆钱晒干磨成粉后加作料发酵一段时间便成酱,拿来作餐桌上的小吃,十分美味。
2023-07-26 00:17:381

跪求 创新ProdiKeysDM随键盘带的ProdiKeys小知音软件和创新音乐教程Creative Music Courseware两张光盘 整

跪求 创新ProdiKeysDM随键盘带的ProdiKeys小知音软件和创新音乐教程Creative 现在广州只有Prodikey DM键盘你说的要在香港才买的到 问题补充:那中国
2023-07-26 00:17:411

前端说的MDN是什么意识,全称是什么

Mozilla Developer Network谋智(火狐开源项目)开发者网络工作,里面有所有的互联网开发参考
2023-07-26 00:17:437

吉首大学是几本

吉首大学是本科一批、本科二批招生院校。(1)2021年综合改革省份本科一、二、三批次合并。“3+3”模式:浙江、天津、海南、山东;“3+1+2”模式:湖南、河北、辽宁、江苏、福建、湖北、广东、重庆;(2)甘肃为本科一批录取;(3)在河南、广西、四川、江西、吉林等五省(区)部分专业列入本科一批录取;(4)其他省市为本科二批招生。吉首大学创办于1958年,在湖南省湘西土家族苗族自治州和张家界市两地办学,是湖南省属综合性大学,湖南省国内一流学科建设高校。学校2021年有57个本科专业招生,面向全国29个省(市、区)。
2023-07-26 00:17:441

榆钱寓意是什么?

榆钱是榆树的翅果,因其外形圆薄如钱币,故而得名,又由于它是“余钱”的谐音,因而就有吃了榆钱可有“余钱”的说法。 当春风吹来第一缕绿色,金黄的榆钱就一串串地缀满了枝头,人们会趁鲜嫩采摘下来,做成各种美味佳肴。榆钱的含铁量是菠菜的11倍,是西红柿的50倍。榆钱也是防病保健的良药。榆钱具有通淋、消除湿热等功效,主治妇女白带多、小儿疳积羸。外用可治疗疮癣等顽症。中医认为,多食榆钱可助消化、防便秘。榆钱主要吃法有生吃,煮粥,还有蒸熟配调料。
2023-07-26 00:17:451

什么叫上影线和下影线,在K线图中是哪条呀,日K线中

做这个事,纯粹就是为了之前的回忆19
2023-07-26 00:17:146

吉首大学全国排名多少位

吉首大学全国排名243名。2023年,吉首大学最新排名全国第243名(2023年综合排名数据)。拓展资料:1、吉首大学吉首大学(Jishou University)是位于中国湖南省湘西土家族苗族自治州吉首市的一所本科高校。学校的前身可以追溯到1958年创建的湘西民族师范学校,后于2001年更名为吉首大学。作为一所综合性大学,吉首大学涵盖了多个学科领域,包括理学、工学、医学、文学、经济学、法学、教育学、农学、管理学等。学校拥有一支经验丰富、具有高学术水平的教师队伍,其中包括一批具有博士学位的教授和专家。学校致力于推动科学研究和学术创新,取得了一定的科研成果,并与国内外多所高校和研究机构保持合作与交流。吉首大学注重培养学生的综合素质和实践能力,为学生提供了广阔的学术和职业发展机会。学校设有完善的教学设施和学生服务设施,为学生提供良好的学习和生活环境。此外,学校也积极开展各种校园文化和社团活动,丰富学生的校园生活。2、吉首吉首是中国湖南省湘西土家族苗族自治州的一个地级市,是该州的州府所在地。吉首是中国湖南省湘西土家族苗族自治州的一个地级市,是该州的州府所在地。根据最新统计数据,吉首市的人口约为60万人。该地区主要居民为土家族、苗族和汉族,是一个多民族聚居的地区。吉首地区属于亚热带季风气候,四季分明。夏季炎热潮湿,冬季相对较冷。降雨集中在夏季,雨量充沛。吉首拥有丰富的土家族、苗族等少数民族的民俗文化。此外,吉首市还有一些著名的旅游景点,如凤凰古城、芙蓉江风景区和百里杜鹃花海等,吸引着许多游客前来观光游览。
2023-07-26 00:17:121

sign in是什么意思

signin,英语短语,美式音标为[sa_n _n],意思为“签到;注册;登记;签收”。例句:All visitors must sign in on arrival。来客均须签到;The contract will be ready to sign in two weeks。这份合同两周后即可签字;The shop had a sign in the window:“Have your cards read here,$25。”那家商店的窗户上有个招牌,写着:“算命,$25”。
2023-07-26 00:17:111

"Can you dig it, sucka?

你能挖开它吗?SUCKA 后面应该是人名
2023-07-26 00:17:108

echo什么意思

echo ["eku0259u] vt. 反射;重复vi. 随声附和;发出回声n. 回音;效仿
2023-07-26 00:17:062

signin是什么意思

signin,英语短语,美式音标为[sa_n _n],意思为“签到;注册;登记;签收”。例句:All visitors must sign in on arrival。来客均须签到;The contract will be ready to sign in two weeks。这份合同两周后即可签字;The shop had a sign in the window:“Have your cards read here,$25。”那家商店的窗户上有个招牌,写着:“算命,$25”。
2023-07-26 00:17:031

“mother sucker”的中文翻译是什么?

n. [美国俚语、粗俗语];混账东西;不要脸的家伙;讨厌的事情1.骂人的话如:youmotherfucker你这个不要脸的家伙,混账东西
2023-07-26 00:17:001

echo是什么命令

ECHO命令是大家都熟悉的DOS批处理命令的一条子命令:1.作为控制批处理命令在执行时是否显示命令行自身的开关格式:ECHO[ON|OFF]如果想关闭“ECHOOFF”命令行自身的显示,则需要在该命令行前加上“@”。2.显示当前ECHO设置状态格式:ECHO3.输出提示信息格式:ECHO信息内容上述是ECHO命令常见的三种用法,也是大家熟悉和会用的,但作为DOS命令淘金者你还应该知道下面的技巧:4.关闭DOS命令提示符在DOS提示符状态下键入ECHOOFF,能够关闭DOS提示符的显示使屏幕只留下光标,直至键入ECHOON,提示符才会重新出现。5.输出空行,即相当于输入一个回车格式:ECHO.值得注意的是命令行中的“.”要紧跟在ECHO后面中间不能有空格,否则“.”将被当作提示信息输出到屏幕。另外“.”可以用,:;”/[]+等任一符号替代。在下面的例子中ECHO.输出的回车,经DOS管道转向作为TIME命令的输入,即相当于在TIME命令执行后给出一个回车。所以执行时系统会在显示当前时间后,自动返回到DOS提示符状态:C:>ECHO.|TIMEECHO命令输出空行的另一个应用实例是:将ECHO.加在自动批处理文件中,使原本在屏幕下方显示的提示画面,出现在屏幕上方。6.答复命令中的提问格式:ECHO答复语|命令文件名上述格式可以用于简化一些需要人机对话的命令(如:CHKDSK/F;FORMATDrive:;del*.*)的操作,它是通过DOS管道命令把ECHO命令输出的预置答复语作为人机对话命令的输入。下面的例子就相当于在调用的命令出现人机对话时输入“Y”回车:C:>ECHOY|CHKDSK/FC:>ECHOY|DELA:*.*7.建立新文件或增加文件内容格式:ECHO文件内容>文件名ECHO文件内容>>文件名例如:C:>ECHO@ECHOOFF>AUTOEXEC.BAT建立自动批处理文件C:>ECHOC:CPAVBOOTSAFE>>AUTOEXEC.BAT向自动批处理文件中追加内容C:TYPEAUTOEXEC.BAT显示该自动批处理文件@ECHOOFFC:CPAVBOOTSAFE8.向打印机输出打印内容或打印控制码格式:ECHO打印机控制码>PRNECHO打印内容>PRN下面的例子是向M-1724打印机输入打印控制码。<Alt>156是按住Alt键在小键盘键入156,类似情况依此类推:C:>ECHO<Alt>+156<Alt>+42<Alt>+116>PRN(输入下划线命令FS*t)C:>ECHO<Alt>+155@>PRN(输入初始化命令ESC@)C:>ECHO.>PRN(换行)9.使喇叭鸣响C:>ECHO^G“^G”是用Ctrl+G或Alt+007输入,输入多个^G可以产生多声鸣响。使用方法是直接将其加入批处理文件中或做成批处理文件调用。10.执行ESC控制序列修改屏幕和键盘设置我们知道DOS的设备驱动程序ANSI.SYS提供了一套用来修改屏幕和键盘设置的ESC控制序列。如执行下述内容的批处理程序可以把功能键F12定义为DOS命令“DIR/W”,并把屏幕颜色修改为白色字符蓝色背景。@ECHO”←[0;134;”DIR/W”;13p@ECHO”←[1;37;44m(注:批处理文件中“←”字符的输入方法是在编辑状态下按Alt中小键盘上的27)
2023-07-26 00:16:581

榆钱是什么样子

形状似钱而小,色白成串,因其形圆薄如钱币,故而得名。1、榆钱,又名榆实、榆子、榆仁、榆荚仁,是榆科植物榆树的翅果。由于它是“余钱”的谐音,因而就有吃了榆钱可以有“余钱”的说法。榆钱虽不起眼,却含有丰富的营养物质,不仅好吃,而且也可防病保健。在饥荒之年,是一种救人性命的充饥食粮。2、产于中国,在寒温带、温带及亚热带地区具有分布,可以食用、药用和绿化。榆钱的形态特征:1、榆树是落叶乔木,高达25米,胸径1米,在干瘠之地长成灌木状;幼树树皮平滑,灰褐色或浅灰色,大树之皮暗灰色,不规则深纵裂,粗糙。2、小枝无毛或有毛,淡黄灰色、淡褐灰色或灰色,稀淡褐黄色或黄色,有散生皮孔,无膨大的木栓层及凸起的木栓翅。冬芽近球形或卵圆形,芽鳞背面无毛,内层芽鳞的边缘具白色长柔毛。3、叶椭圆状卵形、长卵形、椭圆状披针形或卵状披针形,长2-8厘米,宽1.2-3.5厘米。4、先端渐尖或长渐尖,基部偏斜或近对称,一侧楔形至圆,另一侧圆至半心脏形,叶面平滑无毛,叶背幼时有短柔毛,后变无毛或部分脉腋有簇生毛,边缘具重锯齿或单锯齿,侧脉每边9-16条,叶柄长4-10毫米,通常仅上面有短柔毛。5、花先叶开放,在前一年生枝的叶腋成簇生状。翅果近圆形,稀倒卵状圆形,长1.2-2厘米,除顶端缺口柱头面被毛外,余处无毛。6、果核部分位于翅果的中部,上端不接近或接近缺口,成熟前后其色与果翅相同,初淡绿色,后白黄色,宿存花被无毛,4浅裂,裂片边缘有毛,果梗较花被为短,长1-2毫米,被(或稀无)短柔毛。花果期3-6月(东北较晚)。
2023-07-26 00:16:571

浏览网页的时候如何让鼠标变成画笔 画圈标注网页上的重点?

点住右键 拖拽鼠标
2023-07-26 00:16:563

诺亚舟小学同点读机如何下载课程

到诺亚舟官网下啊
2023-07-26 00:16:544