同时，催化剂的贵金属含量较低。
目的对低贵金属含量合金铸造精确程度进行比较评价。
Objective To evaluate the casting accuracy of two low-noble dental alloy systems.
结果表明：排放劣化车催化器中的贵金属含量普遍低于新鲜催化器中的贵金属含量；
The results indicated that the noble metal content in catalytic converter of high emission vehicle is lower than the one in new catalyst converter;
考察了浸渍方法、不同浸渍液、贵金属含量、还原温度、载体的预处理等因素对对氯硝基苯加氢还原反应的影响。
The effect of impregnation method, impregnation solutions, loading content of Pt, reduction temperature and the carbon pre-treatment on the activity was discussed.
少量的铅含量在贵金属的氰化提金工艺中是有益的，但铅含量过高在金精矿的焙烧—氰化提金过程中是有害的。
The few lead content is beneficial in the precious metal cyaniding, but the high lead content in the gold concentrate roasting-cyaniding is harmful.
考察了一元铂与二元铂铑两种贵金属催化剂对氰化氢的催化燃烧效果，探讨了温度、氰化氢浓度、空气含量及气体空速等因素对脱除氰化氢的影响。
The catalytic combustion of hydrogen cyanide was studied separately in presence of two kinds of noble metal catalysts, i. e. , unary platinum and dualistic platinum-rhodium.
考察了一元铂与二元铂铑两种贵金属催化剂对氰化氢的催化燃烧效果，探讨了温度、氰化氢浓度、空气含量及气体空速等因素对脱除氰化氢的影响。
The catalytic combustion of hydrogen cyanide was studied separately in presence of two kinds of noble metal catalysts, i. e. , unary platinum and dualistic platinum-rhodium.
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