It acts as a catalyst in the process of fermentation.

它在发酵过程中起触媒。

Finally, this paper states the epurate principle , the focalpoint and the marketing of photocatalyst.

就光触媒净化机理,技术要点以及光触媒产品在内市场上现状等问题进行了阐述。

In this study, the performance of the supported metallic oxide catalysts for catalytic reduction of nitric oxide with carbon monooxide as a reducing agent were investigated.

本论文主要是米金属氧化物担体触媒，于以一氧化碳为还原剂之一氧化氮还原反应。