有奖纠错
| 划词

1.This paper discussed three methods of producting vinyl etherspreparation from acetylene,dehydrohalogenation and acetals.

1.论述了乙烯基醚类化合物三种主要制备方法乙炔法、脱卤化氢法和醛热分法。

评价该例句:好评差评指正

2.A novel family of ester acetal molecular glass materials has been created by the reaction between monocarboxylic acid and divinyl ethers.

2.过一元羧酸和二乙烯基醚反应,我们得到了一种新颖醛结构分子玻璃。

评价该例句:好评差评指正

3.Bromobutyraldehyde ethylene acetal was synthesized from crotonaldehyde by addition with hydrogen bromide and then acetalation with ethylene glycol with an overall yield of 80.

3.巴豆醛先与溴化氢加成,再与乙二醇醛化得到3-溴代丁醛乙二醇,收率80.8%。

评价该例句:好评差评指正

4.The effects of reactant ratio, reaction time, catalyst amount,the species and amount of deaquation reagent on the yield of benzaldehyde 1,3-butanediol acetal were investigated.

4.对苯甲醛与1,3-丁二醇在钒磷氧催化剂作用下醛化反应进行了研究,考察了醇醛比、反应时间、催化剂用量、带水剂种类和体积等因素对苯甲醛1,3-丁二醇醛收率影响。

评价该例句:好评差评指正

用户正在搜索


electrotonometer, electrotonus, electrotransport, electro-tricycle, electrotropic, electrotropism, electrotropy, electrotubogram, electrotype, electrotyper,

相似单词


3G, 401(K), a,

声明:以上例句、词性分类均由互联网资源自动生成,部分未经过人工审核,其表达内容亦不代表本软件的观点;若发现问题,欢迎向我们指正。

60秒-科美国人 2020年6月合集

1.The acetal linker readily cleaves in the presence of acid.

连接剂遇酸很容易裂解。

「科60秒-科美国人 2020年6月合集」评价该例句:好评差评指正
活大爆炸(视频版) 第3季

2.I preserved in a one percent solution of polyvinyl acetal resin.

我把它保存在纯净的 聚乙烯醇脂里了。

「活大爆炸(视频版) 第3季」评价该例句:好评差评指正

用户正在搜索


electrovalve, electrovectocardiography, electrovibrator, electroviscosity, electroviscous, electroweak, electrowelding, electro-welding, electrowinning, electrum,

相似单词


3G, 401(K), a,
  • 手机客户端二维码

    下载手机客户端

赞助商链接