实验结果表明，添加微量金属盐进行实验后，两种反应器的沼气产气量都有所增加，并且产气量增长率也都有很大提高。

Experimental results show that adding trace metal salt experiments, the two kinds of reactors have increased methane gas production and gas production growth rate has greatly improved.

youdao

实验结果表明，添加微量金属盐进行实验后，两种反应器的沼气产气量都有所增加，并且产气量增长率也都有很大提高。

Experimental results show that adding trace metal salt experiments, the two kinds of reactors have increased methane gas production and gas production growth rate has greatly improved.

youdao