valid porosity

• 有效孔隙率

valid porosity的用法和样例：

例句

1. It is found, in one-dimensional subsurface flows, that porosity and storativity play an important role in the propagation of the head potential fluctuation.
   由研究发现，一维地下水层中，受扰动地下水水头的传递快慢受饱和土壤储水系数及有效孔隙率的影响。