控制有害气体的排放，将有害气体转化为无害气体的有效措之一就是采用三元催化转化器。
One of the most effective measures to control pernicious gases ejection and turn them into harmless gases is to use ternary catalyst.
结果表明：稀燃发动机转速对其有害气体排放和燃油经济性的影响与稀燃吸附还原催化转化器稀燃运行时间与浓燃还原运行时间比值大小和绝对时间大小有关。
The results show that the effects of speed on the exhaust gas emission and fuel economy are related with the ratio value and the absolute time of lean burn and rich burn.
模拟结果显示了起燃过程中催化转化器载体温度场以及气体浓度场的变化。
The result shows the change of its temperature field and concentration field in light-off course.
在该偶联反应中，氢气是一种气体催化剂，它的加入有助于甲烷的脱氢偶联转化制备C2烃。
Hydrogen was a gas catalyst in the reactions, and it was useful for hydrogen to synthesis of C2 hydrocarbons by dehydrogenation coupling reactions of methane.
根据SO_2液相催化氧化机理，在转化器末段设置两个并联的催化剂床，周期性地通过转化气体和干燥空气。
According to the mechanism of liquid phase catalytic oxidation, the converted gas and the dry air are passed through alternatively the two parallel beds located at the final stage of converter.
根据SO_2液相催化氧化机理，在转化器末段设置两个并联的催化剂床，周期性地通过转化气体和干燥空气。
According to the mechanism of liquid phase catalytic oxidation, the converted gas and the dry air are passed through alternatively the two parallel beds located at the final stage of converter.
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