In these tests, we choose two typical soils to analysis: sand and silt.
本试验采用两种典型土样进行分析:细砂土和粉质粘土。
Most of the sand and silt was carried down from the river.
大部分泥沙都是由河流沉积下来的。
填满了泥土或砂砾的。
The sand have silt up the mouth of the river.
泥沙已把河口堵住了。
The sand have silt up the mouth of the river.
沙和石头沉到了河底。
The sand have silt up the mouth of the river.
沙和石头沉到了河底。
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