runofftabn.引板runoffn.径流量；流出；流放口；决赛runoff-sediment series水沙序列runoff production change产流变化runoff erosion potential经流侵蚀势runoff-denoted Z index径流量Z指数runoff at the dry season枯季径流runoff from source rivers四源流径流量runoff coefficient method径流系数法runoff-sediment process水沙过程runoff volume of rainfall降雨径流runoff and tidal dynamics径潮动力

run off逃跑； 流掉；迅速离开