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它们是催化合成肉桂酸正丁酯的良好催化剂.用英语怎么说？

它们是催化合成肉桂酸正丁酯的良好催化剂.

They were good catalyst for synthesis of n - butyl cinnamate.

相关词汇
they were good catalyst for synthesis of butyl cinnamate

they

pron. 他/她/它们，人们，大家，政府，当局，她们；
例句
The storms had abated by the time they rounded Cape Horn.
他们绕过合恩角时，暴风雨已经减弱。

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；
例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

good

adj. 好的，优秀的，有益的，漂亮的，健全的；n. 好处，利益，善良，善行，好人；adv. 同well；
例句
This recipe makes a good accompaniment to ice-cream.
这道食谱适合搭配冰激凌。

catalyst

n. <化>触媒，催化剂，〈比喻〉触发因素，促进因素，〈口〉有感染力的人；
例句
I very much hope that this case will prove to be a catalyst for change...
我非常希望这起事件能催生变革。

for

prep. 为，为了，倾向于，关于，当作；conj. 因为，由于；
例句
I've come looking for a bit of advice.
我特来讨教。

synthesis

n. 综合，<化>合成，综合体，综合推理；
例句
His novels are a rich synthesis of Balkan history and mythology...
他的小说融合了大量巴尔干半岛的历史和神话故事。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；
例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

butyl

n. 丁基，丁基合成橡胶；
例句
The degraded starch and acrylamide - butyl acrylate copolymer have been produced.
本文制得了异相酸降解淀粉和丙烯酰胺 — 丙烯酸丁酯共聚物.

cinnamate

n. 肉桂酸；
例句
Butyl cinnamate was synthesized from cinnamic acid and butyl alcohol using tungstosilicic acid as catalyst.
以钨硅杂多酸为催化剂,通过肉桂酸和正丁醇反应合成肉桂酸正丁酯.
热门例句
...the spiralling vortex airflow that slows the plane.
使飞机减速的螺旋形气流涡旋
You just go on ahead. I'll come by later...
你只管先往前走。我随后就来。
He sat there while I made the case for his dismissal...
他坐在那儿，听我陈述解雇他的理由。
For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
He would be able to flash a roll of greenbacks too some day.
真的,他要在这些要人名流现在吃饭的地方吃饭.
I am a dark, self - destructive, happiness - doubting, unforgivable man.
我是个阴郁, 自我 毁灭, 怀疑快乐, 不可饶恕的人.
He lived on an invalidity pension which came as a weekly giro.
他靠每周领取的作为病残养老金的直接转账救济支票过日子。
All the antiques have been authenticated and recorded.
所有的古董都已经过鉴别并进行记录。
You're joking. Are you serious?...
你准是在开玩笑。你是认真的吗？
相关例句
In the forensicfield, the final arbiters of quality are the courts.
在法医学领域, 质量的最后仲裁者是法庭.
A voter must necessarily be no younger than eighteen.
选民必须在18岁以上.
She feels her job is tying her down.
她感到工作把她束缚住了。
Nurses are undervalued, and they never enjoy the same status as doctors.
护士的作用被人们低估了，她们从未享有和医生同样的地位。
The students think that the teacher's praises are based on favoritism.
学生们认为老师的表扬是有偏向的.
I slipped a note under Louise's door...
我偷偷在路易斯的房门下面塞了一张便条。
...that last fling before you finally give up and take up a job.
你最终收心并开始工作之前的最后一次放纵
Books are often stacked in higgledy-piggledy piles on the floor.
书本经常乱七八糟地堆在地板上。
The balance continues to swing away from final examinations to continuous assessment.
期末考试渐渐被连续性评估所取代。
If you leave your car there, the police will impound it.
如果你把汽车停放在那儿, 警察就会把它扣押.