When flow velocity decreases below the corresponding incipient motion condition, no sediment movement occurs. 當水流速度小于相應的起始運動(dòng)時(shí)，將無(wú)泥沙運動(dòng)。
The physical pattern of sediment exchange and bed coarsening simulation was put forward, and long-term data on hydraulic-dynamics and sediment motions were modeled. 提出了泥沙交換和河床粗化計算模擬的物理圖案，對長(cháng)系列水動(dòng)力和泥沙運動(dòng)進(jìn)行了?；幚?。
