catalyst的复数形式怎么写

Aspirin is synthesized through O - acylating reaction from acid and anhydride acid with anhydrous carbonate as catalyst.以水杨酸和乙酸酐为原料,采用无水碳酸钠作为催化剂经O - 酰化反应合成了阿司匹林.In 2002, we develop Photo - catalyst & electronic Ionizer A...

catalyst的音标：catalyst的英式发音音标为：['kætəlɪst]catalyst的美式发音音标为：['kætlɪst]...

n.触媒，催化剂，〈比喻〉触发因素，促进因素，〈口〉有感染力的人...

I see my role as being a catalyst for change.我认为我的角色是促成变革。A catalyst is a substance which speeds up a chemical reaction.催化剂是一种能加速化学反应的物质.It acts as a catalyst in the process of fermentation.它在发酵过程中起触媒的作用....

“云集”的拼音为：yún jí...

水 渍 险是否包括甲板上装货的规定?Does a W. P . A . policy include a deck loading stipulation?如果指定在甲板上装货, 保险率是否会提高?If deck loading is specified, will the insurance rates be higher?...

任何有较强重力的物体都会对其他物体产生引力。Anything with strong gravity attracts other things to it.重返大气层的航天器受到重力的作用。Spacecraft which are re-entering the earth's atmosphere are affected by g forces.由于重力的关系,苹果往下掉.An apple falls down beca...

n.股票持有者，股东...

A photographer recorded the scene on video for posterity.摄影师用摄像机为后代记录下了这个场景。Instead, we are blessed with the disciplining power of posterity.相反, 我们生来就享有后代所赋予的训导力量.The names of those who died are recorded for posterity on...

elude的一般过去时为：eluded...

Health Sciences such as Medicine, Dentistry , Pharmacy, Physiotherapy and Physical Education.健康科学,如内科, 牙医, 药剂学,临床和物理教育.Small moveable CIP system is mainly used in biology ferment and pharmacy.小型移动式CIP系统主要应用于生物发酵、制药行业.He ...

Green和Pratt使用旋转镜头的摄影机,其具有一种爆发性的楔形物.Green and Pratt employed a rotating - mirror camera with an explosively driven wedge.光的干涉发生在折射率为m的薄的透明的楔形物里.Optical interference takes place in a thin transparent wedge of refractive in...

别再把额外的工作派给她了, 她已经忙不过来了.Don't give her any extra jobs; she's snowed under already.为什么把倒霉的活全派给我了?Why should all the unpleasant things be pushed off on to me?他派给凯撒一支六千人的部队.He sent caesar a force of six thousand me...

eject的现在完成时为：ejected...

n.甲孕酮，醋酸甲羟孕酮，安宫黄体酮...

草栖的...

n.奥氏体...

Aldur的音标：...

John Maynard Keynes used somewhat gnomic utterances in his General Theory.约翰·梅纳德·凯恩斯在其《通论》中用了许多精辟言辞。a gnomic style格言式gnomic verse格言诗...the somewhat gnomic utterances of John Maynard Keynes in his General Theory.约翰·梅纳德·凯恩...