pond sediment 池塘底泥
Sediment deposit pond 沉砂池
Sediment of aquiculture pond 鱼塘底泥
deposit coarse sediment and release fine sediment 淤粗排细
retaining course sediment and discharging fine sediment by channel storage 拦粗排细
1∶50 000 stream sediment 1∶5万水系沉积物
1-D mathematical model for flow and sediment 一维水沙数学模型
2 D depth averaged flow and sediment model 平面二维水沙数学模型
2-D flow and sediment mathematical model 二维水沙数值模拟
2-D horizontal flow and sediment model 平面二维水沙数学模型
2-D mathematical model of tidal wave and sediment 二维潮波泥沙数学模型
2D non-equilibrium sediment transport equation 二维不平衡输沙方程
2-D numerical water-sediment model 二维水沙数学模型
2-D suspended sediment model 平面二维悬沙数学模型
3-D flow and sediment transport model 三维水沙数学模型
3-D water and sediment model 三维水沙模型
50000 Stream Sediment Survey 5万水系沉积物测量
abundant and coarse sediment area 多沙粗沙区
abundant and coarse sediment area of north Shaanxi 陕北多沙粗沙区
abyssal sediment 深海沉积物; 深海沈积物; 深海沈积; 深海沉积