technogenic contamination

Economic Analysis of Water Basin Water Pollution and Its Governance;

流域水污染成因及其治理的经济分析

Study on the Causes of Pb Contamination in Westlake Longjing Tea and Their Control Techniques;

西湖龙井茶铅污染成因及治理技术研究

Condition of the Three Rivers and the Comprehensive Management in Haian Country;

海安“三河”污染成因及其综合整治方案的研究

Cause and advise on the aquaculture water pollution in China;

我国水产养殖水污染成因及其对策研究

The cause of environment pollution and the policy of management about sea alongshore in our country;

我国近岸海域环境污染成因与管理对策

Analysis and Solution on Water Pollution of Putian Dongzhen Reservoir;

莆田市东圳水库水源污染成因分析与对策建议

The Evaluation of the Air Atmosphere s Quality of Fuzhou and the Analysis of the Cause for Air Pollution;

福州市区大气环境质量评价及污染成因分析

A Rational Analysis of Water Pollution Factors in Wei River Valley and the Prevention and Control Measures;

渭河流域水污染成因的探析及防治对策

Study on the Reasons and Controlling Countermeasures of Rural Non-point Source Pollution Around Poyang Lake

环鄱阳湖区农村面源污染成因及控制对策研究

a discoloration caused by blood.

物体上因为沾染上血而形成的污点。

a stain produced by oil.

物体上因为沾染上油而形成的污点。

a stain produced by mud.

物体上因为沾染上泥而形成的污点。

Fluorine Pollution and its Formation Analysis of the Shallow Groundwater in Jiaozuo City

焦作市浅层地下水氟污染及成因分析

Abstract: In recent years, exhausted gas contamination of vehicle becomes the main factor for air pollution in cities.

文摘:目前，汽车排气污染已成为城市空气污染的主要因素。

or contamination with industrial or farm waste.

或工农业污水造成污染。

AN ANALYSIS AND PREDICTION OF HEAVY POLLUTION ON WINTER METEOROLOGICAL CONDITIONS IN CHENGDU

成都市冬季重污染日气象条件成因分析及预报

Ever-increasing traffic and household fires are blamed for the pollution.

汽车尾气和家庭取暖是造成污染的主要原因。

THE CAUSE OF FORMING ACID RAIN IN HENGYANG AND PREDICTION AND COUNTERMEASURES OF THE POLLUTION

衡阳市酸雨的成因及其污染的预测与对策