英德
有道
百度
谷歌
图片
维基
百科
醇醛 [chún quán]
[有化] alcohol aldehyde
- 采用PEG-400为相转移催化剂，KOH为碱性催化剂，由苯甲醛和正庚醛经醇醛缩合反应制得茉莉醛。
Jasminaldehyde was synthesized by the aldol condensation of benzaldehyde with heptaldehyde under the condition of PEG-400 as phase transfer catalyst, KOH as base catalyst. - 对苯甲醛与1，3-丁二醇在钒磷氧催化剂作用下的缩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-丁二醇缩醛收率的影响。
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. - 乙醇汽油发动机排气中的醇醛排放随发动机的转速和负荷增加而增加，其中乙醛排放随燃料中乙醇含量的增加而增加；
Alcohol and aldehyde emissions were increased with the increase of the speed and load, and acetaldehyde was increased with the increase of ethanol concentration in the blended fuels.
 |
 |
 |
 |
 |
 |
 |
中国词汇量第二的英语词典
更多精彩，登录后发现......
