Sources of water pollution can be classified broadly into two categories: point sources and nonpoint sources.
水体环境污染源按其发生类型分为点源、非点源。
The definitions of urban nonpoint source pollution were summarized, and the categories, sources, hazards and factors of urban nonpoint source pollution were discussed.
总结了城市非点源污染的定义，探讨了城市非点源污染的种类、来源、危害、影响因素等特征。
The definitions of urban nonpoint source pollution were summarized, and the categories, sources, hazards and factors of urban nonpoint source pollution were discussed.
总结了城市非点源污染的定义，探讨了城市非点源污染的种类、来源、危害、影响因素等特征。
应用推荐