yearly variation of runoff 径流年际变化
multiyear variation of runoff 径流多年变化
variation of runoff and sediment 水沙变化
trend of runoff variation 径流变化趋势
Climate fluctuation is one of the primary factors which influence the variation of runoff and sediment.
气候波动是影响径流、泥沙变化的主要因素之一。
Firstly, it directly influences the periodic variation of precipitation and air temperature, then influences the periodic variation of runoff based on the underlying surface.
天体运动直接影响降水和气温的周期变化，进而在一定的下垫面条件下，影响径流的周期变化。
The quantitative variation of runoff and sediment load in the basin of the Middle Yellow River due to the effects of hydro projects and water conservation measures was suggested as a current result.
为了各方面应用的参考，作为阶段性成果，提出了黄河中游水利水保工程减水减沙的定量数据。
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