Sodium ethylate was used as catalyst in Baker - Venkataraman of cyclization, and all factors were studied.环合反应采用乙醇钠作为Baker-Venkataraman重排反应的催化剂, 研究了影响反应的各个因素....
她能够看到自己在反光镜中被缩小的古怪形象。She could see herself in the reflecting lenses, which had grotesquely foreshortened her.当然,还需要有人安置和拆卸反光镜.But the reflectors do of course have to be emplaced and removed.使用小型反光镜照相机很有用.It is very usefu...
His rent payment is overdue.他的房租过期未付.This debate is long overdue...这场辩论早该进行了。I'll go home and pay an overdue visit to my mother.我将回家看望母亲，其实我早该回去了。Teachers have joined a strike aimed at forcing the government to pay ...
在这个程度上局部化可以认为是不明确的.The localization can be considered uncertain to this extent.我们更多的强调了模和局部化.We put more emphasis on modules and localization.应变局部化的发展与土坡破坏有着密切联系.The strain localization had a close relation with the fail...
杂草中危害通常仅限于叶脉间的条状区域.On grasses, injury is usually confined to areas between the veins.叶脉有两种:平行脉和网状脉.There are two kinds of venation , parallel and net.叶脉中木质部比重越大,越有利于水分的传输.Large proportion of xylem benefit to the water tr...
哥伦比亚队凭借流畅的传球和终场前的制胜进球击败了他们。They were outplayed by the Colombians' slick passing and decisive finishing.我们将门票收入都捐给了圣约翰急救队。We gave the gate money to the St John Ambulance brigade.获胜者将在本周末的季后赛中对阵奥克兰运动者队。The winner will...
David's crying subsided to a whimper.大卫的哭声慢慢变成了呜咽.The child was lost and began to whimper.那孩子迷了路，抽抽搭搭地哭起来。He could not possibly have endured a whipping without a whimper.他不可能一声不吭地忍受鞭打....