目的研究苯乙醛的新合成方法.Aim To a new synthetic method for synthetic method for the phenylacetaldehyde....

这些反应能把四分之三的乙醇酸的碳保存在三碳糖中.These reactions can conserve three of every four carbons diverted to glycolate by forming triose.乙醇酸早就被认为是光合作用早期的重要的产物.Glycolate has long been recognized as an early and important product of photo...

乙二醇迅速地被它氧化,生成草酸和羟基醋酸.Glycol is oxidized rapidly by it to oxalic and glycolic acids.结果表明,聚乙二醇缩水甘油醚对丝胶蛋白具有明显的交联作用.The result showed that polyethylene glycol diglycidyl ether cross linked sericin obviously.摘要 聚乙二醇 是一类亲水性长链聚...

把好苹果放在有孔的聚乙烯袋中保存。Keep good apples in perforated polythene bags.这种聚乙烯塑料应该可以挡一会儿雨.This polythene sheet should serve to keep out the rain for a while.我在容器上盖了一片聚乙烯塑料薄膜，解决了这个问题。I have overcome this problem by placing a sheet ...

MgO改性提高对二乙苯选择性最为明显.Silylation, P modification and MgO modification can improve p - DEB selectivity greatly.指出高效、节能的分子筛吸附分离法是分离二乙苯的最佳选择.The best choice for separating diethylbenzene is the adsorptive separation by zeolite...

“乙酰基”的拼音为：...

“乙基”的拼音为：yǐ jī...

“溴乙烯”的英语可以翻译为：[医] bromethylene，vinyl bromide ...

“乙醇盐”的英语可以翻译为：[化] ethoxide，ethylate，ethylation ...

“甲乙烯”的英语可以翻译为：methylvinyl ...

“碘乙烷”的拼音为：diǎn yǐ wán...

R ” 是取化基,如乙氧基 、 甲氧基及它们的环氧和烷氧同系物或卤基.R " is a replaceable function , e . g . acetoxy, methoxy, their acyloxy and alkoxy homologs or halo.蒸馏得质量分数高于98%的邻乙氧基苯甲酸,收率为92%.Distillation gave o ethoxybenzoic acid with 98 % of the p...

“溴乙烷”的拼音为：xiù yǐ wán...