impurity是什么意思

impurity

英 [ɪm'pjʊərɪtɪ] 美 [ɪm'pjʊrəti]

n. 杂质；不纯；不洁

英文词源

impurity (n.): 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.

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.

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.

相关单词