cta

arctan1=π/4=45°。计算过程如下：1、 arctan表示反三角函数，令y=arctan(1)，则有tany=1。2、由于 tan(π/4) = 1，所以y=π/4=45°。arctan 就是反正切的意思，例如：tan45度=1，则arctan1=45度，就是求“逆”的运算，就好比乘法的“逆”运算是除法一样。不是特殊函数值的反正切，需要通过计算器求解，类似的还有arcsin就是反正弦，sin30度=1/2，则arcsin1/2=30度，此外，还有arccos 和arccot 等等。arctan性质：反正切函数 定义域：R。值 域：(-π/2,π/2)。单调性： 增函数。奇偶性：奇函数。周期性：不是 周期函数。单调性：（－∞，﹢∞）单调递增。tan(arctana)=a。arctan(-x)=-arctanx。arctan A + arctan B。=arctan[(A+B)/(1-AB)]。arctan A - arctan B。=arctan[(A-B)/(1+AB)]。反三角函数在无穷小替换公式中的应用：当x→0时，arctanx~x。

arctan1=π/4=45°。计算过程如下：1、 arctan表示反三角函数，令y=arctan(1)，则有tany=1。2、由于 tan(π/4) = 1，所以y=π/4=45°。积化和差公式：sinα·cosβ=(1/2)[sin(α+β)+sin(α-β)]cosα·sinβ=(1/2)[sin(α+β)-sin(α-β)]cosα·cosβ=(1/2)[cos(α+β)+cos(α-β)]sinα·sinβ=-(1/2)[cos(α+β)-cos(α-β)]和差化积公式：sinα+sinβ=2sin[(α+β)/2]cos[(α-β)/2]sinα-sinβ=2cos[(α+β)/2]sin[(α-β)/2]cosα+cosβ=2cos[(α+β)/2]cos[(α-β)/2]cosα-cosβ=-2sin[(α+β)/2]sin[(α-β)/2]

解题如下：幂级数，是数学分析当中重要概念之一，是指在级数的每一项均为与级数项序号n相对应的以常数倍的（x-a）的n次方（n是从0开始计数的整数，a为常数）。幂级数是数学分析中的重要概念，被作为基础内容应用到了实变函数、复变函数等众多领域当中。拓展资料：幂级数解法是求解常微分方程的一种方法，特别是当微分方程的解不能用初等函数或或其积分式表达时，就要寻求其他求解方法，尤其是近似求解方法，幂级数解法就是常用的近似求解方法。用幂级数解法和广义幂级数解法可以解出许多数学物理中重要的常微分方程，例如: 贝塞尔方程、勒让德方程。

amendment美/mendmnt/ 中文谐音：额们得门特 n.修正案;改善;更正reluctant  美 /rɪˈlʌktənt/ 中文谐音：若欧拉客扥特  adj.不情愿的;勉强的;顽抗的origin  美 /ˈɔːrɪdʒɪn/  中文谐音：我瑞珍呢  n.起源;原点;出身;开端

y=arctanx的值域范围是（-π/2，π4102/2），（-90度，90度）；arctan是确定的，但是有无穷多个角正切值相等，就需要结合角的范围和正切值确定角。设a＝arctan1／2，b＝arctan－2；tana＝1／2，tanb＝－2． tana＊tanb＝－1；所以baitana＝－cotb＝cot（－b）＝tan（90＋b）；所以a＝90度＋b；a＋b＝90度。扩展资料clc； clear all；x ＝ solve（＇pi／2－atan（0．1＊x）－atan（x）＝pi／3＇）结果：x =0.51115050831354048586889698135473>> 转换为度数：x =0.51115050831354048586889698135473>> x/pi*180ans =92.007091496437287456401456643851/pi>> vpa(x/pi*180)ans =29.286766822332567508763406842613>>

1可以去掉a2可以去掉ia3ia可以去掉4不知道

respectable essay的中文翻译respectable essay 像样的文章

Alignment Rectangle 对齐矩形 Frame Rectangle 框矩形一个UI元素的区域有两种：可见区域、Frame区域。以button为例，一个button的可见区域就是那个左右圆角的矩形，而这个button的 Frame区域 通常情况下会比 可见区域 大，这个button的 Frame区域 可能就是在可见区域外部的一个矩形包围盒。类似的，Frame Rectangle 指的就是外围包围盒的位置和尺寸，Alignment Rectangle 是和 UI 元素的可见区域相关的。此外，XCode 的 Auto Layout 是通过 Alignment Rectangle 而不是 Frame Rectangle 来实现的。右对齐的虚线是和这个button的可见区域的右边缘对齐的。

这明明是四个字啊，字面意思是企业的忠诚度不喜欢疏远。

你好，despair表示绝望，失望的意思，expectation是期望的意思，所以带着满满的期待陷入了绝望，意译一下就是期望越大，失望越大谢谢~

spectacular spell壮观的拼写

接触 联系，具体要结合整句话

expect 的形容词为expectant

批量更新

Chaos, solitons & fractals [0960-0779]期刊名称Chaos, solitons & fractalsCHAOS SOLITONS FRACTALSCHAOS SOLITON FRACTALCHAOS SOLITON FRACTCHAOS SOL FCHAOS SOLITONS AND FRACTALS APPLICATIONS IN SCIENCE AND ENGINEERINGChaos, solitons, and fractalsChaos, solitons and fractals0960-07792003242033CSFOEH同行评议：是 本刊收录在： Ei Compendex (2013年) 本刊收录在： Ei Compendex (2015年) 本刊收录在Web of Science： SCIE(2012版) 本刊收录在Web of Science： SCIE(2013版) 本刊收录在Web of Science： SCIE(2016版) 点击: 查看SCI影响因子(2009)Impact Factor:3.315; 5-Year Impact Factor:3.773 点击: 查看SCI影响因子(2010)Impact Factor: 1.267 ; Rank: 4011 点击: 查看SCI影响因子(2014)Impact Factor: 1.448, Rank: 4329

正如他所说

CFDA认证做了，但是若果产品带带WIFI/蓝牙/通讯射频的，还要做SRRC和CTA认证。SRRC我们最快6周拿证，蓝牙/wifi最低3000rmb一款。专业射频测试，有意可联系。

установка安装, 装设, 定位, 装置, 设置, 调整, 调节, 确定, 设备, 装配, 调准, 调定, 方针, 目标, 宗旨, 指示, , 复二-вок(阴)1. 见установить2. 设备, 装置; (安装好的)机器холодильная установка 冷藏装置заводские ~и 工厂的设备3. 方针, 目标, 宗旨установка на высокое качество продукции 产品优良质量的目标целевая установка программы 政纲的目标(3). иметь ~у (на что) 有... 目的; 目的在于..4. 指示; 指令установка центральных органов 中央机关的指示дать (получить) ~у 下达(收到)指示

是俄国斯丹达原味伏特加独特的品牌标识及花纹酒瓶造型，口感超级爽滑，口味纯正，还保留了传统俄罗斯伏特加的“面包”醇香的特点，是传统俄罗斯伏特加的最好诠释。

Reading Jane Eyre feltJane Eyre is by far the best known of Charlotte Bronte"s novels. The story is interesting and impressive. Because the heroine"s personal character is different from the common run. In other novels, their heroines are always beautiful or powerful or rich. But Jane Eyre is only a short, penniless and plain woman. Once reading the novel, I can not forget Jane"s strong personal character. Jane"s bravery, persistence, self-respect and confidence run through the book. In this book Charlotte Bronte creates a new woman for those days.Jane Eyre” was charlotte Bronte"s masterpiece. It was an autobiographical novel in a certain degree. The novel opens with little Jane as a despised orphan in the house of her uncle"s widow. Being rebellious, she is packed off to a “charity” boarding-school, which administers harsh discipline with especial vigor Jane sets herself to learn, qualifies herself as teacher, advertises for a post, and is employed as governess of the illegitimate French daughter of Rochester in his country mansion, Thornfield. A love relationship develops between Jane and Rochester. Jane"s resolute free spirit, her soul of fire, brings from the dominant Rochester a proposal of marriage. But knowing that Rochester has a wife at Thornfield, Jane leaves there without any hesitation. She is rescued by the Rivers in order to undertake missionary work at his side. Almost she consents a great misfortunate befalls Mr. Rochester: he blinded during a fire, Hearing that Rochester is penniless and disable, Jane Eyre hurries to him and become his wife.The story is told with terrific intensity, the agonies of Jane are presented so powerfully and in such a simple but telling language that they cannot be read without emotion. It is not a romance. Like other novels of charlotte Bronte, “Jane Eyre” is characterized by relentless truthfulness to ordinary reality. Even when the action is most exciting, its details are strictly true to real life. Jane Eyre, the heroine of this novel, struggled to acquire her self-respect, independence, dignity and self-sufficiency at every stage of her life, both in struggling with social pressure, maltreatment, discrimination and in resisting the temptation of passion. At the end of the novel, Jane gains what she wants.Jane is a model for us to defend our rights, and independence is very important in our daily life.Jane was an ordinary woman. Without beauty, high social position, just because of her superior character---independence, wise, will-power, self-respect, self-love which decided a ordinary woman owned an unordinary love. Jane is a model for many women, especially modern women. Jane Eyre is the ideal female that they imagined. Naturally, Jane was an unfortunate girl. However, to our human being, flesh is weak, but spirit strong. Only when the spirit gets the upper hand, he would be successful, Or else, he would be dominated by others and captured by the lot. Jane set a good example for us. Unfortunate conditions didn"t reduce her to depravity. She suffered a lot of hardships, which was far more than many people. Which were most women can"t bear. However, because of her superior inner power, she gained what she wished.In the end of the novel ,when she found Rochester lost all his property, and Rochester was blinded and disabled, she went to see him and married him at Ferdean. At that time, real love was superior to anything in her mind. Nothing could stop their love any longer, Jane got the happiness and love she needed most.

reluctant没有否定前缀。reluctant读音：英 [rɪˈlʌktənt]   美 [rɪˈlʌktənt]。释义：不情愿的;勉强的。英英释义：unwillingness to do something contrary to your custom。翻译：不愿意做违背你习惯的事。unwilling语气强烈，指有力的否定、拒绝。也可指被牵涉于非本意之事。reluctant指做不赞同的，不很乐意的或害怕的事，有时也指坚决反对某事。反义词：agreeableagreeable的基本意思是“欣然同意的”,引申可指“令人愉快的,惬意的”,多指与环境协调或与某人兴趣相同,爱好一致或表示取悦于人的心理,使之兴奋。agreeable在句中可用作定语、表语、宾语补足语,作表语时常与介词to连用(其后可接sb/sth/ v -ing),还可接动词不定式,意思与接“to v -ing”基本相同。agreeable可用very, most等修饰。

score名词 n. [C]1.(比赛中的)得分,比数;(测验的)成绩,分数His total score was one hundred and fifty-five. 他的总积分是一百五十五。 What is the score now? 现在比数多少? Jack got a low score on the test. 杰克测验得了个低分。2.【音】总谱,乐谱;(电影,歌舞等的)配乐3.方面;理由,根据4.(赛跑等的)起跑线;终点线5.欠帐;宿怨They forgot old scores and became friends. 他们忘却旧仇,成了朋友。6.真相[the S]7.刻痕;伤痕I noticed scores of sorrow on her face. 我注意到她脸上悲痛的痕迹。8.二十,二十人,二十个[M]9.大量,许多[P][(+of)]He"s been to Hong Kong scores of times. 他曾多次去过香港。10.【俚】(毒品的)买到手;(抢劫的)得手;(性伴侣的)搭上及物动词 vt. 1.(体育比赛中)得(分),记(分);使得分He only scored nine hundred marks. 他只得九百分。2.(考试等中)得(分)Mary scored the highest marks on the exam. 玛丽考试中得了个最高分。3.给...打分,给...评分[O1]Professor Hunter is busy scoring the examinations. 亨特教授正忙于给考试评分。4.赢得;取得He has scored a great success with his new play. 他的那出新戏获得了极大的成功。5.把...写成总谱;为(影片等)配乐[(+for)]He scored many a film. 他曾为多部影片配乐。6.刻痕于;做记号于He scored the tree with a nail. 他用钉子在树上刻痕。7.严厉批评,训斥8.【俚】非法弄到(毒品等)不及物动词 vi. 1.(在比赛中)记分Who is going to score for both sides? 谁来为双方记分?2.得分;得胜,成功She scored well on the history test. 她在历史测验中得了高分。3.刻痕;划线;做记号4.【俚】非法弄到毒品等5.【俚】(男子)与...性交;勾搭上性伴侣[(+with)]

tempt-tempationagitate-agitationinflat-inflationostentate-ostentation

管理感应器

metal hammer指：金属锤

affe

lower expectation higher satisfaction的中文翻译lower expectation higher satisfaction 低期望值越高expectation 英[ˌekspekˈteɪʃn] 美[ˌɛkspɛkˈteʃən] n. 预期; 期待; 前程; [数] 期望值; [网络] 期望; 舞蹈教学; [例句]Students "expectations were as varied as their expertise.学生们的期望根据他们的专业各有不同。[其他] 复数：expectations 形近词： affectation infectation expectative

expectation 英[ˌekspekˈteɪʃn] 美[ˌɛkspɛkˈteʃən] n. 预期; 期待; 前程; [数] 期望值; [例句]What is your expectation for yourself in each role?角色都依你来定。你扮演每个角色的预期是什么？[其他] 复数：expectations 形近词： affectation infectation expectative expectation 英[ˌekspekˈteɪʃn] 美[ˌɛkspɛkˈteʃən] n. 预期; 期待; 前程; [数] 期望值; [例句]What is your expectation for yourself in each role?角色都依你来定。你扮演每个角色的预期是什么？[其他] 复数：expectations 形近词： affectation infectation expectative

Affectation of candour is common enough; ——one meets it every where.表面的公平随处公见。

期望、预料，望采纳

expectations[英][ekspek"teɪʃnz][美][ekspek"teɪʃnz]n.希望( expectation的名词复数 ); 预料; （被）预期; [常作复数] 期望的事情; 形近词：affectations双语例句 1Stephen Chase had determined to live up to the expectations of the Company.斯蒂芬·蔡斯决心不辜负公司的期望。2That was no surprise, as P& G had announced, earlier in the week, that Lafley would no longer be participating in quarterly earnings calls as the company tries to get off the hamster wheel of meeting or missing quarterly expectations.这个消息并不令人意外，因为上周早些时候宝洁已经宣布，雷福礼不会再参加季度业绩电话会议，公司希望能摆脱季度收益是否达到预期这样周而复始的比较。

1

affectation假装affection两词拼写起十相似容易弄混组词且均非用两词词义用都非同affectation:指假装装模作；矫情affection:指种情般慈、喜、钟、慕意Iworesunglassesallthetimeandpeoplethoughtitwasanaffectation.我戴着墨镜家都觉我装酷Shehaddevelopedquiteanaffectionfortheplace.逐渐钟加

ffection 亲情

affe

affectation 英[ˌæfekˈteɪʃn] 美[ˌæfɛkˈteʃən] n. 装模作样; 假装; 矫情; 装模作样的言行; [网络] 故弄玄虚; 做作,虚假; 矫饰; [其他] 复数：affectations 形近词： infectation expectation humectation

这两个词的意思区别很大：delectable = Greatly pleasing; delightful。Highly enjoyable, esp pleasing to the taste; delightful。让人高兴，喜悦的；尤其指味觉上获得令人愉快的感觉。desirable = Worth doing or achieving; advisable；Arousing desire。令人满意，值得拥有，主要强调的是“值得”，或者是引起对某事的“欲望”。如果要说两个词的联系，某件事或某个是事物，首先让人满意，高兴（delectable），然后就激发了希望拥有的欲望（desirable）。前‘因"而后‘果"。

emulate模仿，学着：My hope is that you will learn something from what I"m telling you, even you don"t want to emulate me. 我希望你们即便不学我,也能从我的话里，学到些什么。imitate模仿，照着来:So even if DoCoMo"s ambitious plan succeeds, operators elsewhere could find it hard to imitate.即使多科莫那野心勃勃的计划最后能成，别处的操作者也发现，太难照着再来一次了。mimic模仿，依葫芦画瓢：One would expect news coverage to be positive and small investors to mimic the trade.人们原本预计新闻报道会是正面的，散户也将依葫芦画瓢。simulate模拟，仿真：You play a game to simulate adventure, but when there"s real adventure out there in the real world, you just wimp out. 你们玩模拟的探险游戏，现在真有探险了吧，你们又怂了。affectation娇柔做作: He says someone with a flair for cocktail party conversation, a witticism, would say this. He gives it to us, but he frames it as an affectation of style. 他说在一个鸡尾酒派对上交谈的调酒师，这是妙语，他给我们了，但是他将其用娇柔做作的风格包装起来。feign假扮，伪装（某人）: He claims he met you at butter that night you feign serena. 他说在你假扮瑟琳娜那晚,他在巴特见过你们。Disguise伪装：Look like an angel, talk like an angel, But the devil in disguise. 外表像个天使，说话也像个天使，但却是恶魔伪装而成。pretend假装某事，某场景: I"m gonna pretend that you"re not a movie star, And we"re just two roommates. 我会装做你不是电影明星一样，我们只是室友而已。

Admirable!Amazing!Astonishing!Astounding!Awesome!Bravo!Brilliant!Crackerjack!Cool!Delightful!Dynamite!Excellent!Exceptional!Extraordinary!Fabulous!Fantastic!Gorgeous!Groovy!Impressive!Lovely!Magnificent!Marvelous!Mind-blowing!Miraculous!Neat!Nice!Outstanding!Perfect!Phenomenal!Remarkable!Sensational!Sharp!Snazzy!Spectacular!Splendid!Stunning!Stupendous!Super!Superb!Swell!Terrific!Tremendous!Wonderful!Wow!都有 “很棒！” “绝无仅有！” 的意思

B 分 析： 考查形容词词义辨析。句意：他对局势的处理是令人佩服的，这被在场的每一个人高度赞扬。A可敬的；B令人佩服的；C可信的；D负责任的，故选B。 考点： 考查介词短语辨析

a<0asin+bcos=√（a^2+b^2）^sin（α-arctan b/a)

受尊敬的职业

适应性预期（Adaptive expectations） 适应性预期，在 经济学 中是指人们在对未来会发生的预期是基于过去 （历史）的。适应性预期是一种关于预期形成的观点， 认为预期仅由过去经验所形成，预期将随时间推移缓慢发生变化。 例如，如果过去的 通货膨胀 是高的， 那么人们就会预期它在将来仍然会高。

牛批，都没有dicate这个单词。楼上也能答出来

bata-lactamase是指β内酰胺酶，不是抗菌药物，它是一种可引起青霉素类或头孢类药物耐药的酶。Cefoxitin是指头孢西丁，Cefoxitin Screen不是一种抗菌药物，可能是你打错英文，如果没错，应该可以理解为对头孢西丁耐药的屏障的意思，估计你是在对细菌耐药相关文献上看到的。

"Hundreds of steps lead to the high wall which surrounds the president"s palace." The editor at once sent the journalist a telegram instructing

CPA：注册会计师 Certified Public AccountantCTA：注册税务师 Certified Tax AccountantCPV：注册资产评估师 Certified Public Valuer

octavebandwidth的意思octavebandwidth[英][ˈɔktɪvˈbændwidθ][美][ˈɑktɪvˈbændˌwɪdθ]倍频程带宽;如果您有什么疑问和不解之处，欢迎追问我！！！如果您认可我的答案，请采纳。您的采纳，是我答题的动力，O(∩_∩)O谢谢

octave bandwidth英 [ˈɔktɪv ˈbændwidθ] 美 [ˈɑktɪv ˈbændˌwɪdθ]倍频程带宽===========================================柳浪闻莺各位芝麻竭诚为您解答您的采纳是我们坚持百度的动力

走自己的路，让别人说去吧

spectator violence是指球场观众暴力或球迷暴力。球场观众暴力(specator violence in sports)是指球场观众暴力或球迷暴力。艾森(Eitzen)把球场观众暴力定义为:在赛场上球迷之间进行的有目的的破坏或伤害行为,这种行为可能是由于个人、社会、经济或者竞争等各种原因引起的。他把球场观众暴力行为分为三类:即流氓( rowdyism)、狂热的庆祝(exuberant celebration)和骚乱(sport riots)。球场观众暴力与球场暴力应有所区别，球场暴力应该包括球员暴力、球迷暴力以及发生在球场.上的其他人员的暴力。在我国描述球场观众暴力的词汇很多,如“球迷骚乱”、“足球流氓”、“球场暴力"、“观众暴力”、“观众闹事"等。从体育社会学角度来讲，球场观众暴力是一种激情犯罪行为。激情是-种比较激烈的.爆发性的、时间短暂的情绪状态,狂喜狂怒恐惧等多是激情的表现。对于球迷来说,观看比赛就是他们生活中的重要事件,积极的激情就是竭尽全力为自己喜爱的球队助威呐喊,但又不失自我形象。而消极的激情就是指看球时不能控制自己的情绪,出现狂喜、暴怒等有伤身体甚至危及他人的行为。

固定搭配：in expectation 期望着；意料之中 have expectations of (对…)抱有期望 beyond expectation 出乎意料 expectation of life 平均寿命；预期寿命（等于life expectancy）用法：expectation 英[ˌekspekˈteɪʃn] 美[ˌɛkspɛkˈteʃən] n. 预期; 期待; 前程; [数] 期望值; [例句]Students "expectations were as varied as their expertise学生们的期望根据他们的专业各有不同。There"s no expectation of snow tonight.今晚预料无雪。Excellencies, the sense of expectation is clear.这种期望感显而易见。我们即将开展非常重要的工作。Some people live by the expectation of others.有些人为他人的期望而活。The weight of expectation was getting to them.他们逐渐感觉到了期望带来的压力。

n. 希望( expectation的复数形式 ) 预料； （被）预期； [常作复数] 期望的事情，期望双语例句1. unrealistically high expectations不切实际的过高期望2. Against all expectations, the theatre reopened to encouragingly large audiences.出乎所有人的预料，剧院重新开放时观众数量喜人。3. She thus confounded expectations yet again.于是她再一次使人们的预期落空。4. It was an excellent party that surpassed expectations.这是一次远超人们预期的精彩聚会。5. Students" expectations were as varied as their expertise.学生们的专长各有不同，期望值也不一样。

expectation 英[ˌekspekˈteɪʃn] 美[ˌɛkspɛkˈteʃən] n. 预期; 期待; 前程; [数] 期望值; [例句]Students "expectations were as varied as their expertise学生们的期望根据他们的专业各有不同。[其他] 复数：expectations

calcium lactate乳酸钙双语对照词典结果：calcium lactate[英][ˈkælsiəm ˈlækˌteɪt][美][ˈkælsiəm ˈlækˌtet]乳酸钙; 以上结果来自金山词霸例句:1.The bacterial food incorporated into the healing agent is calcium lactate-a component ofmilk. 纳入愈合剂的细菌食品是乳酸钙-一种牛奶成分。-----------------------------------如有疑问欢迎追问！满意请点击右上方【选为满意回答】按钮

calcium lactate[有化] 乳酸钙[网络短语]calcium lactate 乳酸钙,乳酸钙〔缓衡剂,面团调筛齐Calcium malate lactate 乳酸苹果酸钙Calcium gluconate lactate 葡萄糖酸乳酸钙希望帮到你 望采纳 谢谢！！

calcium lactate英[ˈkælsiəm ˈlækˌteɪt]美[ˈkælsiəm ˈlækˌtet]乳酸钙

歌曲名:unpredictable, illogical歌手:green pitch专辑:ace of heartsUnpredictable, Illogicalartist: Green Pitchalbum:"Ace of Hearts"I"m minimized by your courtesyI know it isn"t your intentionstill a part of meis saddened by youI"m saddened by youUnpredictable, illogicalyou were trusted and treasuredit"s such a shameaccidental, inexplicablebut I"m somehow convinced thatyou"re to blameAnd I resign, humble and shifty eyedI still remember all your storiesI"ll tell you one of mineI"m saddened by youso saddened by youUnpredictable, illogicalyou were trusted and treasuredit"s such a shameaccidental, inexplicablebut I"m somehow convinced thatyou"re to blameYou apologize but don"t changestranger with a well known faceand I might just lie when I sayI don"t miss youI don"t miss youunpredictable, illogicalyou were trusted and treasuredit"s such a shameaccidental inexplicableit"s too late, I"m afraidI"ve lost a friendhttp://music.baidu.com/song/2170524

abrupt英 [ə"brʌpt]美 [ə"brʌpt]adj. 生硬的；突然的；唐突的；陡峭的

复古一个哥哥

dictate the trend控制趋势trend 英[trend] 美[trɛnd] n. 趋向; 走向; 时尚，时髦; vi. 趋势; 倾向; [例句]What we "re really trying to do is beat the historical trend by getting over it more quickly.我们真正要做的就是打破历史常规，缩短解决周期。[其他] 第三人称单数：trends 复数：trends 现在分词：trending 过去式：trended过去分词：trended 双语例句 柯林斯词典 英英释义 百度百科相关单词:Trend [人名]特伦德TREND abbr. Trendelenburg 特伦德伦伯[位]（垂头仰卧[位]，头低脚高[位]）dictate 英[dɪkˈteɪt] 美[ˈdɪkteɪt] vt. 口述; 命令，指示; 使听写; 控制，支配; vi. 口述; 命令; [例句]How fast do you dictate to your secretary?你向你的秘书口述的速度有多快？[其他] 第三人称单数：dictates 复数：dictates 现在分词：dictating过去式：dictated 过去分词：dictated 形近词： rectate nactate pectate 双语例句 柯林斯词典 英英释义

可以。因为unctad是联合国贸易和发展会议数据库，是深入分析贸易数量和贸易结构的必会数据库。而baci数据库的数据源是联合国商品贸易和发展会议数据库，baci数据库的数据是来源于unctad数据库的，两者的数据是可以放一起使用。

没有这么个单词。