purifying的音标：purifying的英式发音音标为：['pjʊərɪfaɪɪŋ]purifying的美式发音音标为：['pjʊərɪfaɪɪŋ]...

...

They set up purifying systems in places where the water was not potable.他们在许多水质不适合饮用的地方建立了净化系统。Changing iron into steel is a process of purifying the iron.把铁炼成钢是铁的精炼过程.The extra step would increase the margin of safety b...

A new method for separating and purifying p - AAB ( p - aminoazobenzene ) by dry - column chromatography is developed.提出了一种干柱层析法 分离提纯 试剂对氨基偶氮苯的新方法.The present invention provides membrane separating and purifying process ...