| 释义 |
impurities是impurity的复数 impurity美 [ɪm'pjʊrəti] 英 [ɪm'pjʊərəti] n. contamination,pollution,adulteration,uncleanness,infection n. | 1. the state or quality of being impure 2. a substance that adulterates or contaminates something 3. a small amount of a substance added to a pure semiconductor to control its electrical conductivity 4. an amount of a substance, especially one that is not valuable or is of low quality, that is present in another substance 1. the state or quality of being impure 2. a substance that adulterates or contaminates something 3. a small amount of a substance added to a pure semiconductor to control its electrical conductivity 4. an amount of a substance, especially one that is not valuable or is of low quality, that is present in another substance |
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