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.

来自辞典例句

2 . This impurity must be purged away after death.

这种污秽应该在死后加以净化.

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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.

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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.

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5 . Reasons of forming first cracks were foundry lacuna, impurity gathering, lard exiting.

铸造缺陷 、 杂质元素偏聚和夹杂物的存在是形成早期裂纹源的原因.

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