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1·When the operating time is constant, the plastic film cover of precipitation is decided by the rainfall duration and daily evaporation.

当操作时间一定时，塑苫的降水量由降水持续时间和日蒸发量决定。

2·There was a decreasing trend in each pollutant concentration with rainfall duration and finally tends to flat. So we collect the rainwater after abandoning part of the initial flow of rainwater.

并且各污染物浓度均随降雨历时呈减少趋势，后趋于平缓，可采用弃流部分初期雨水后进行收集。

3·The appearing and lasting time of pipe flow is related to the rainfall intensity, duration of rainfall, the previous water content of soil and the location of soil pipe in soil section.

管流出现的时间、管流历时与降雨强度、降雨历时、土壤前期水分含量和土管所处的土壤剖面位置等因素有关。

4·The investigation on the relationship between the stability of unsaturated soil slopes and rainfall mainly focuses on the effect of rainfall intensity, duration and rainfall amounts.

在降雨对非饱和土斜坡稳定性影响的研究中，对降雨强度、降雨持续时间和降雨量的研究比较成熟，而研究雨型对斜坡稳定性的影响比较少。

5·Slope in certain Geological setting and in a certain Mechanical Environment requires a certain rainfall, rainfall intensity or duration to promote slope damage.

在一定地质背景和力学环境下的斜坡需要一定的降雨量、降雨强度或降雨持续时间才能促使斜坡破坏。

6·Some basic laws were certified. Different periods in duration and intensity of rainfall were studied.

除验证了一些基本规律外，还对降雨历时、降雨强度的分段进行了研究深入探讨。

7·The cumulative quantity of runoff's nutrient increases correspondingly along with the more enhancing rainfall intensity and longer duration of runoff generation.

随着雨强的增大、产流时间的增加，径流养分累积量也相应增大。

8·The rainfall Intensity Duration Frequency formula is one of the bases in hydrology calculation, and has been of considerable interest to engineers and hydrologists.

降雨公式是水文计算的基本依据之一，也是工程师和水文学家十分关心的问题。

9·The identificationof a flash heavy rain event relies on two factors: the rainfall rate and the duration of rainfall.

短时强降水事件的识别主要由雨强和降水持续时间两个要素确定。

10·Storm brings strong rainfall intensity in short duration, moreover, the shorter duration the average rainfall intensity is stronger.

暴雨在短历时内产生较强的降雨，而且暴雨的间隔时间尺度越短平均雨强就越大。