rainfall duration meaning in English
降雨持续时间，降雨历时
降雨延时
Examples
- With the same slope gradient and slope length , the soil erosion on the dyke slope caused by the runoff mainly depended on the factors such as the runoff , flow velocity , rainfall intensity , rainfall duration , as well as the up - slope drainage area of dyke slope
坡度、坡长一定时，径流对戗坡的侵蚀主要与径流量、流速、雨强、降雨历时，戗坡以上汇聚水量或集水面积有关。 - By monitoring the quality of the roof rainwater gathered in shanghai and analyzing the main influential factors as well as the pollution level , it is found that roof material , rainfall duration , rainfall intensity and volume are important influential factors affecting the quality of runoff from roofs
摘要通过对上海市屋面雨水水质监测，及对其污染主要影响因素与污染程度的分析表明，屋面材料、降雨历时、降雨强度及降雨量等是屋面径流雨水水质的重要影响因素。 - Based on the analysis of the data and information from the field observations and lab experiments , the results were as follows : ( 1 ) the results of the simulated rainfall and runoff erosion experiments in lab . under the design experiment conditions including the constant rainfall intensities of 1 . 0 , 2 . 0 , 3 . 0mm / min and the rainfall durations of 30 , 70 minutes and with soil moisture content 9 . 5 % or 10 . 0 % for dry situation , as well as with the soil moisture content 19 . 0 % or 20 . 0 % for wet situation , the soil erosion increased nonlinearly with the rainfall intensity , and the rainfall duration . the results of the experiments indicated that the amount of soil erosion caused by the simulated rainfall and runoff on the dry - soil slope was more than that on the wet - soil slope
通过实地观测及室内试验资料分析，得到如下研究成果： 1 、室内模拟降雨径流对戗坡的侵蚀试验研究结果在定雨强为1 . 0 、 2 . 0 、 3 . 0mm min ，降雨历时30 、 70分钟，干土含水量为9 . 5 10 . 0 ，湿土含水量为19 . 0 20 . 0的条件下，侵蚀量与雨强成非线性正比关系；雨强大，侵蚀量大；降雨历时长，侵蚀量也大；堤坡含水量大时，侵蚀量小，堤坡含水量小时侵蚀量大。 - 3 . through analyzing the erosion energy characteristic of different rainfall capacity , rainfall duration , and runoff depth classes , we draw that rainfall kinetic energy and runoff energy presented positive correlation with the rainfall duration . and presenting the fluctuation change with extension that rainfall duration ; runoff energy increase with increase of runoff depth
( 3 )通过分析不同降雨量、降雨历时、径流深量级中侵蚀能量特征，得出降雨动能和径流能量都与降雨量基本呈正相关；随降雨历时的延长呈波动性变化；径流能量随径流深的增加而增加。