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

酶和辅助因子两者结合成完整分子时，形成具有活的全酶。

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

在乙苯氧化脱氢过程中,生成了一种活性,是一种具有催化活性的物质。