英语语法分析

The catalysts can divide into two kinds: the transition metal bifunctional catalysts and oxycarbide catalysts of transition metals.

催化剂可以分为两种：过渡金属双官能催化剂和过渡金属的碳氧化物催化剂。

Therefore, the study on bifunctional catalysts and their application in alkane conversion is necessary.

因此，对催化烃转化反应的双功能催化剂的研究就显得十分重要。

The result shows that oxygen electrodes have bifunctional catalysis activity but it is not completely reversible.

结果表明该氧电极具有双功能催化特性，但不完全可逆。