downdrift
n. 往下漂流;逐渐下降;语调下降
例句
In computation of shoreline erosion on the downdrift side of that port breakwater, the influence of the variation of longshore breaker height is considered.
对于突堤下游的冲刷过程的计算,考虑了由于沿岸波高变化对沿岸输砂率的影响。