| 单词 | 不纯物 |
| 释义 | 〔dioxin〕Any of several carcinogenic or teratogenic heterocyclic hydrocarbons that occur as impurities in petroleum-derived herbicides.戴奥辛：一种致癌或致畸杂环族碳氢化合物，在从石油提取的除锈剂中以不纯物出现〔alumina〕Any of several forms of aluminum oxide, Al2O 3, occurring naturally as corundum, in a hydrated form in bauxite, and with various impurities as ruby, sapphire, and emery, used in aluminum production and in abrasives, refractories, ceramics, and electrical insulation. Also called aluminum oxide 矾土，氧化铝：一种氧化铝的形式，Al2O 3，以钢石的形式存在，水合形式存在于铝土矿中，杂有各种不纯物，如红宝石、蓝宝石、金刚砂，用于制造铝、研磨剂、耐火材料、瓷器和电子绝缘物 也作 aluminum oxide |
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