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impurity是什么意思

impurity

英[ɪmˈpjʊərəti] 美[ɪmˈpjʊrəti]

n.污点，污染；掺杂，不纯；不道德，罪恶；混杂物，粗劣品

purity

双语例句

1 . The oxygen reacts vigorously with the impurity in the iron.: 氧气与铁中的杂质发生剧烈的化学反应.

2 . This impurity must be purged away after death.: 这种污秽应该在死后加以净化.

3 . The impurity of supposedly pure subcellular fractions is a constant threat to the plant biochemist.: 以为亚细胞组分很纯而实际不纯的情况,一直是植物化学家感到难办的问题.

4 . Silica, in fact, is a desirable impurity because it is one of the reactants.: 硅石实际上是一种有用的杂质,因为它是一种反应剂.