孔隙水压力会改变土体中的有效应力；
Pore water pressure in soil will change the effective stress of the soil;
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本发明还公开了上述孔隙水压力计的使用方法。
The invention also discloses a use method of the pore water pressure gauge.
明确孔隙介质中水压力的实质；
The essential of water pressure is studied;
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