There are hefty charges across the board for one-way rental.各处对单程租赁的收费都很高。The President promised across-the-board tax cuts if re-elected.总统许诺如果能再次当选将采取全面的减税措施。It is very cold outside, you'd better come indoors acros...
METHODS: The target compound was prepared by the bromination and amination reaction.方法: 用溴代及胺化反应合成了四甲基吡嗪衍生物.The effects of triacetoneamine concentration on hydrogenation and amination were discussed.论述了三丙酮胺纯度对加氢和还原胺化反应的影...
waterless cleaning无水清洁A broken blue line means the course of a waterless valley.蓝色虚线代表无水流过的山谷。a waterless barren region干旱的荒芜地区Waterless offset : Offset printing using waterless plate, thus the damping system may be elimi...