推移质运动 meaning in English

bed load motion
bed load movement

1 - d and 2 - d model for non - uniform bedload transport are applied to compute the amount of bedload in the south branch of the changjiang estuary . it can be found that the peak value of bedload transport in a tidal cycle , computed by 2 - d model , is obviously larger than that computed by 1 - d model , which is induced by the disequilibrium of bedload transport in cross - river direction
在此基础上，将非均匀推移质公式推广到二维计算，并与一维计算结果作了对比，发现两种计算所获得的净输沙量相差不大，但二维输沙过程线峰值较一维计算要大，这正是河道内推移质运动横向不均匀性的体现。