壤土是砂粒、粉粒和粘粒的混合物。
直接的方法就是测定砂粒、粉粒和粘粒中的固定态铵含量。
The direct method is to determine the contents of fixed ammonium in sand, silt and clay.
试验结果表明，不仅干密度影响动强度，粘粒含量和粉粒含量变化对动强度影响也较大。
It is proved that not only dry density but also the particle content change of clay content and silt content affect liquefaction strength.
没有什么土壤是单纯的粘粒、粉粒、砂粒和砾石。只不过是某种土粒为主而已。
No soil is pure clay, silt, sand or gravel, but a soil may contain a large amount of one of these.
研究结果表明红壤坡地固体径流中80%以上土壤颗粒为粉粒和粘粒。
The results show that 80% of the soil particles in the runoff solid is silt and clay in the sloping field of red soil.
研究结果表明红壤坡地固体径流中80%以上土壤颗粒为粉粒和粘粒。
The results show that 80% of the soil particles in the runoff solid is silt and clay in the sloping field of red soil.
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