The calculation result indicates that for a given starting condition, the coefficient is not a constant, but varies with the relative exposure degree of grain.
结果表明，在起动状态一定时，该系数并非为一个常量，而是介于某个区间，且随颗粒在床面上的相对暴露度的变化而变。
The formula shows the transport rate is not a constant but varies with the relative exposure degree of particles that lying on riverbed when the flow intensity is at fixed value.
提出了一种计算推移质输沙率的方法及公式，该公式表明，在水流强度一定时，输沙率并非为一个常量，而是随颗粒在床面的相对暴露度而变。
Calculations of exposure degree, exposure coefficient and equivalent grain size for grains with various size located at different position relative to the riverbed are carried out.
并对不同粒径，在床面不同位置的暴露度、暴露度系数及等效粒径进行了计算。
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