Medicine intermediate N - ethylethylenediamine ( NEED ) was synthesized from acrylamide and ethylamine by addition reaction and Hofmann rearrangement.以丙烯酰胺为起始原料,经乙胺加成后,再经Hofmann重排两步反应后合成了药物中间体N - 乙基乙二胺 ( NEED )....
An HPLC method for the determination of bifenthrin emulsifiable concentrates was developed.建立了HPLC测定联苯菊酯含量的方法.Mixing phoxim emulsifiable mixture of phoxim and phorate.辛、甲混合制剂是由辛硫磷与甲拌磷两种农药复配而成的.This paper reports the main...
I think she has many good qualities besides being very beautiful.我觉得她不但长得非常漂亮，而且还有很多优秀品质。We have lots of things in common besides music.除了音乐，我们还有很多共通点。Besides the acting being true to life, the singing was splendid.不但动作十...
Teachers can only be expected to do what is reasonable and practicable.教师只应该做合情合理而且切实可行的事。at the earliest practicable opportunity在尽可能早的时机Please weigh the above points and see if they are practicable.以上几点意见是否可行,请酌定....
They're freshly baked. I fetched them from the baker's this morning.它们是刚出炉的。我早上去面包房买回来的。The players can advertise baked beans, but not rugby boots.球员可以给烤菜豆做广告，但不能代言橄榄球靴。She'd baked some bread which made th...