sewage purification造句怎么写

4、Shanghai Jiao Tong University attached their importance to such exhibitions as key technology of reproducing used auto engine parts and of countryside new sewage purification.

2、Conclusion: in the course of sewage purification the result of purification can be reflected indirectly through determining the level of the turbidity degree in water.

1、The study progress of aquatic plants for urban sewage purification

3、But the rule of the adjustments of different forms of, ecological restoration and sewage purification treatment and to carry out the specific measure.