n.支流

Main factors effecting on flow rate in braided river is gardient of anabranch,area of water,roughness and velocity. 影响汊道分流比的主要因素有：两汊的比降、过水断面积、糙率、流速等。

Qin"an located in the downriver area of Cucurbit River which is the branch of Wei River (Wei River is an anabranch of Yellow River), in the north of Tianshui city southeast Gansu province. 秦安县位于甘肃省东南部,天水市北部,渭河支流葫芦河下游。

Keywords Three Gorges Reservoir;anabranch;the area of fluctuant backwater;the model of water quality; 三峡库区;次级河流;回水变动区;水质模型;

the river valleys which the the Yarlung Tsangpo and its anabranch flow by in the southern part of Tibet and lie between the Gangdise and the Himalaya ranges; 在冈底斯山和喜马拉雅山之间，即雅鲁藏布江及其支流流经的地方，是藏南谷地；