为了凝结氯乙烷气体,必须使用大量的冷却水.Great quantities of cooling water must be available for condensation of the ethylchloride.简述了二氯乙烷的理化性质 、 作业标准和法规.The article describes the physico - chemical properties, operative standers and laws o...
“海伦走之前吃了点儿东西，”塞西尔急忙插了一句。"Helen had something to eat before she left," put in Cecil anxiously.塞西尔此时开始慌张起来，连忙发射了两枚遇险信号火箭。Cecil now began to panic and fired off two distress rockets.塞西尔继承了斯坦福德附近的一处家族房产。Cecil inherited a fam...
他现在正值智力全盛期.He is now at the meridian of his intellectual power.英国在都铎王朝时代处于全盛期.England flourished under the Tudors.两大战之间的时期是卡特尔的全盛期.The interwar period was the hey - day of Cartels....