duration of fall meaning in English
降雨持续时间
落潮历时
退潮持续时间，退潮历时
Examples
- 4 . as for the three kinds of waterproof underlying surface , when rainfall intensity is strong , the rise process curve will steep in the process of discharge , and also speed of discharge to reach steady will quicker . but it produces little effects on duration of fall
4 .对于透水性差的下垫面，雨强越大，流量过程的涨水曲线越陡，且达到稳定流量的速度也更快，但对流量过程的退水历时影响不大。