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挥发性化合物金属离子 metallic volatile compounds
真空蒸馏提纯硒利用元素的挥发性不同进行金属硒的提纯。
Purifying selenium by vacuum distillation. Metal selenium purification is on the base of different elemental volatility.
研制出用于催化氧化废气中挥发性有机化合物(VOC)的非贵金属氧化物催化剂。
A catalyst based on non noble metal oxides for catalytic oxidation of volatile organic compounds (VOC) in waste gas has been developed.
耐磨耐用皮革脚垫简介＊ 1。环保健康一流产品：不含挥发性碳氢化合物，诸如可塑剂、溶剂（甲苯）及PVC有毒重金属；
The environmental health of first-class products: non-volatile hydrocarbons, such as plasticizers, solvents (toluene) and toxic heavy metals in PVC;
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