结果表明，土壤孔隙率在毫米尺度上存在较为明显的差异，在水头压力下，孔隙率随着深度增加而变大。
The result showed the evident existences of the variability of porosity in soils on mm-scale. Under the stress of water, pore becomes more and more bigger with the deepne…
开采孔隙承压含水系统，引起含水层水头下降。
The water level in a confined aquifer will fall as the confined aquifer is being exploited.
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