通过研究NEDC循环工况下整车的瞬态排放情况，分析了减速断油及怠速停机过程中，氧浓度及温度的变化对催化器转化效率的影响。
The influence of oxygen concentration and temperature on the conversion efficiency of catalytic converter was analyzed by examing the transient emission in NEDC(new European driving cycle).
采用流化固体技术使低级重质油转化为轻质产品的热加工过程。
A thermal process utilizing the fluidized-solids technique for continuous conversion of heavy, low-grade oils into lighter products.
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