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- Percentages of the Water Quality Grades of the Hai River System 海河水系水质类别比例
- The order of the pollution for serious level to light level in the seven key river systems in 2001 is: Hai River,Liao River,Huai River,Huang River,Song Hua River,Yangtze River and Pearl River. 2001年，七大水系污染由重到轻的顺序依次是：海河、辽河、淮河、黄河、松花江、长江和珠江。
- The order of the pollution for serious level to light level in the seven key river systems in 2001 is: Hai River, Liao River, Huai River, Huang River, Song Hua River, Yangtze River and Pearl River. 2001年度七大水系污染由重到轻的顺序依次是: 海河、辽河、淮河、黄河、松花江、长江和珠江。
- Hai River System 海河水系
- The Grand Canal joins the Hai River at Tienjin. 大运河在天津和海河汇合。
- The Grand Canal joins the Hai River at Tianjin. 大运河在天津和海河汇合。
- What is Australia's biggest river system? 澳洲最大的河流系统是?
- An extensive area of land drained or irrigated by a river system. 流域由一个大河系排水或灌溉的广阔的土地区城
- This river system has over 30 rivers. 这一河系共有30多条河流。
- Study on the Correlations between Do and NH 3 N as well as COD Mn in the Tailed Water Body of Hai River. 海河下游水体中DO与NH_3-N、COD_(Mn)相关关系探讨
- The region draining into a river,river system,or other body of water. 流域将水排入某河流、水系或其它水体的地域。
- Taihang Mountain, standing on the edge of Campagna of North-China, is the headstream of Hai River. 太行山雄居华北平原西缘，是海河的发源地。
- The region draining into a river, river system, or other body of water. 流域:将水排入某河流、水系或其它水体的地域。
- Key Areas: Huai River,Hai River,Liao River,Tai Lake,Chao Lake,Dianchi Lake,Bo Sea,SO2 and acid rain control regions,Beijing Municipality. 重点地区: 淮河、海河、辽河、太湖、巢湖、滇池、渤海、二氧化硫污染和酸雨控制区、北京市。
- Key Areas: Huai River, Hai River, Liao River, Tai Lake, Chao Lake, Dianchi Lake, Bo Sea, SO2 and acid rain control regions, Beijing Municipality. 重点地区：淮河、海河、辽河、太湖、巢湖、滇池、渤海、二氧化硫污染和酸雨控制区、北京市。
- Named "SanNu Zhai" or Three Women Stronghold in the Northern Dynasty (960-1127), today's Tianjin was then a mere stockaded village on the south bank of Hai River. 天津，在北宋(960-1127)时，只是海河南岸的一个小寨子，叫“三女寨”。
- The major pollution indicators in the Yangtze River system are petroleum and ammonia nitrogen. 长江水系的主要污染指标是石油类、氨氮和高锰酸盐指数。与上年相比，水质持平。
- The water quality of the Pearl River system in Guangxi is better than that in Guangdong. 珠江水系广西境内江段水质好于广东境内江段。
- The north of the province is drained by tributaries of the Hai River, such as Sanggan and Hutuo rivers. 山西北部则属于海河流域，境内有桑干河和滹沱河等海河支流经过。
- Channel deposits, consisting of sand, silt and clay, fill the valleys cut by a river system. 河道沉积由砂，粉沙和粘土组成，充填于河流切割的河谷之中。
