本文报道了用菱锌矿作原料,制备硫酸锌的工艺条件.The technological conditions of the preparation of zinc sulfate with smithsonite as raw materials was reported.研究了以菱锌矿为原料通过酸浸、除杂、中和、沉淀、干燥制备碱式碳酸锌和活性氧化锌的生产工艺.A process for the production of basic zi...
They like to go ballooning at weekends.他们周末喜欢乘气球玩.Esther used to visit him for the occasional days and weekends.埃丝特过去会偶尔在周末或别的日子来探望他。It was virtually impossible to synchronise our lives so as to take holidays and weekend...
With characteristic rashness and valor, Peter plunged into the icy water.以他惯有的冲动和勇气，彼得一头扎进了冰冷的水中。Fortitude is distinct from valor.坚韧不拔有别于勇猛。The captain is always boasting of his military valor.上尉老是自夸阵前之勇....
史蒂文斯给他写了张便条，请他去自己的公寓。Stevens wrote him a note asking him to come to his apartment.史蒂文斯遭谋杀源于深仇宿怨。Stevens's murder was the result of a deep-seated and intense hatred.约翰·史蒂文森是谢菲尔德大学的历史学高级讲师。John Stevenson is Reader in ...
维多利亚瀑布今年的降雨量超过了平均水平。Victoria Falls has had above average levels of rainfall this year.媒体报道称24小时内的降雨量达到了65毫米。Press reports said that 65mm of water fell in twenty four hours.已经有4年降雨量低于平均值了。There have been four years of bel...