When a catalytically active enzyme forms a complex with a cofactor a holoenzyme is produced.

酶蛋白和辅助因两者结合成完整分，成具有活的全酶。

In the oxydehydrogenation of ethylbenzene an active coke,formed in the course of the reaction,is the catalytically active material.

在化脱氢过程中,生成了一种活性焦炭,这是一种具有催化活性的物质。