本文从数学方面论证了微型生物在污染的环境中起净化作用的前提是：必须对污染物的排放量加以限制；

This paper has proved mathematically that the prerequisite for mini-orhan- isms to be able to purify polluted environment is that the amount of pollutant should he limited.

youdao

本文从数学方面论证了微型生物在污染的环境中起净化作用的前提是：必须对污染物的排放量加以限制；

This paper has proved mathematically that the prerequisite for mini-orhan- isms to be able to purify polluted environment is that the amount of pollutant should he limited.

youdao