短語詞組短語river mouth runoff 河口徑流river water runoff measurement 橋上測流法river channel runoff 河道徑流Zonality of river runoff 徑流地帶性amount of river runoff 河川徑流量river runoff change 河川徑流變化annual river runoff 年徑流量Heihe river runoff 黑河流量river 's runoff changes 河川徑流變化 返回 river runoff