runoff modulus

基本解释

The runoff coefficient and the erosion modulus are related to the rainfall.
其径流系数与侵蚀模数与次降雨量、降雨强度有一定的相关性；
Then water inflow in tunnel is forecasted using groundwater dynamics and groundwater modulus of runoff.
然后利用地下水动力学法、地下水径流模数法对隧道开挖涌水量进行了预测。
In the upper-middle Jinghe watershed of Malian river, annual stream runoff and runoff modulus almost have no change during the last 30 years. But in the whole watershed the stream runoff decreases;
在泾河流域马莲河分流域，年径流和径流模数在过去30年中基本维持稳定，整个泾河流域年径流量逐年下降；