有效的压实可以显著改善土壤的承载能力，提高不渗透性。
Effective compaction can improve the bearing capacity of the soil, improve not permeability.
所述自由体积的不连续变化会涉及所 述透气材料层的渗透性的突然变化。
The discontinuous change in free volume will involve an abrupt change of the permeability of the breathable material layer.
所述自由体积的不连续变化会涉及所 述透气材料层的渗透性的突然变化。
The discontinuous change in free volume will involve an abrupt change of the permeability of the breathable material layer.
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