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impurities的音標：impurities的英式發(fā)音音標為：[?m'pj??r?t?s]impurities的美式發(fā)音音標為：[?m'pj??r?t?s]...
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n.不純( impurity的名詞復(fù)數(shù) )，不潔，淫穢，雜質(zhì)...
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Once its impurities had settled, the oil could be graded.一旦雜質(zhì)沉淀下去，油就可以分級了。A filter will remove most impurities found in water.過濾器會濾掉水中的大部分雜質(zhì)。Oil is refined to remove naturally occurring impurities.油經(jīng)過提煉去除天然存在的雜質(zhì)。...
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Once its impurities had settled, the oil could be graded...一旦雜質(zhì)沉淀下去，油就可以分級了。The separation and determination of the primary impurities of diflubenzuron by liquid chromatography were carried out.通過反相液相色譜方法往甲醇與水的混合流動相中加入適當...