Urban groundwaterpollution serious generally, showed a trend of deterioration. Most of the rivers have been varying degrees of pollution.
城市地面水污染普遍严重,呈恶化趋势。绝大多数河流均受到不同程度污染。
2
In the international case, especially in America and Europe, groundwaterpollution from pesticide leaching has been studied for many years and advanced kinds of measures.
国际上,特别是美国和欧洲国家,早就开展了对农药污染地下水的研究,并提出了许多控制措施。
3
Evaluation of groundwater vulnerability is an effective way to study and prevent groundwater from pollution.