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...
This area is subject to earthquakes.该地区常发生地震。Earthquakes produce two types of seismic waves...地震产生两种地震波。It's sheer folly to build nuclear power stations in a country that has dozens of earthquakes every year.在每年会发生几...
用原子荧光仪分析污酸中的砷.Arsenic in waste acid was determined successfully by atomic fluorescence.研究人员特意用新的袖珍荧光仪检测了天然彩色钻石的荧光特征.Specifically , these researchers examined fluorescence trends of natural fancy - colored diamonds using ...
Shiva is a dark god; he dwells in the mountains and deserts.湿婆神匿影藏形于深山和沙漠之中。A philosopher dwells in the realm of ideas.哲学家停留在概念的王国里.She dwells too much upon her past.她过于详细地叙述她的过去....