片语
movement of river silt河流泥沙移动
river dredging silt疏浚污泥
Yellow River modulus silt cellular黄河淤泥模数多孔砖
siltdig up river silt挖河泥
Yellow River silt body黄河泥沙质坯体
Yellow-River alluvial silt黄河沖积粉土
Yellow River KPI silt cellular黄河淤泥KPI型多孔砖
river silt engineering[水利]
Yangtze River silt长江淤沙