Application of solvent extraction process in tungsten hydrometallurgy is summarized.概述了溶剂萃取技术在钨冶金方面的应用.Biological metallurgy is new technology which combines bacillus's affection and hydrometallurgy.生物冶金是一种细菌作用与湿法冶金...
他可能一时大意说漏了嘴。He might have let something slip in a moment of weakness.我明白她谈话的大意。I follow the drift of her conversation.信的大意是说他不久就会来.The letter is to the effect that he will soon arrive....