The average rainfall volume on Sichuan and Chongqing rated 345.9 mm, the lowest level in history records since 1951.
四川、重庆平均降水量为345.9毫米，是1951年以来历史同期最小值。
Taking a residential district in Xi 'an as an example, optimal design volume of rainwater storage basin was calculated combined with the rainfall data.
以西安市某建筑小区为例，结合西安市的降雨资料，计算得出该小区的雨水蓄水池最佳设计容积。
Hystersis influences infiltration characteristics and runoff volume during the process of rainfall infiltration runoff.
滞后作用的存在，不但影响降雨过程中的入渗特性，而且影响产流量。
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