pollution degree造句怎么写

The quality situation and pollution degree of groundwater directly represent its environment quality.

Introducing reverse logistics to logistics management not only saves the cost of enterprises, but also reduces the pollution degree to the environment.

Introduction on the sources and pollution degree of wastewaterfrom china? s brewery was presented.

Mud filtrate invasion depth and pollution degree are two important parameters in the optimum perforation design.

When the multi-ingredient pollution if transformed into the single-object decision, the results could directly show the integrative level and pollution degree of a certain area air quality.