mid-15c., "thing which makes or is impure;" c. 1500, "fact or quality of being impure," from Middle French impurité, from impur (see impure). Related: Impurities.
实用例句
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.
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.
来自辞典例句
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.
来自辞典例句
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.
来自辞典例句
5. Reasons of forming first cracks were foundry lacuna, impurity gathering , lard exiting.
