Timely payment of pollution discharge fees

按时交纳排污费

A basis for selection of pollution discharge positions…

据此可为桑沟湾沿岸的排污口选址提供依据。

A basis for selection of pollution discharge positions is pr…

据此可为桑沟湾沿岸的排污口选址提供依据。

This article firstly analyses the existing defects and weaknesses of the present Water Pollution-Discharge Permit System and points out the necessity to perfect it.

本文首先分析了现有水污染物排放许可证制度存在的问题与缺陷，指出完善的必要性。

A heating plug for engine oil of I. C engine belongs to heating device for engine oil of I. C engine, and is also the plug for engine oil tank confinement and pollution discharge.

一种内燃机机油加热塞，属于内燃机机油加热装置，同时又是机油箱密封和排污的塞子。