effective pore volume

例句：

1. 1. The engineer calculated the effective pore volume of the soil to determine its permeability.
   工程师计算土壤的有效孔隙体积以确定其渗透性。
2. 2.The study found that the effective pore volume of the soil significantly affects its water holding capacity.
   研究发现，土壤的有效孔隙体积对其持水能力有显著影响。
3. 3.The engineer used a specialized tool to measure the effective pore volume of the soil for the construction project.
   工程师使用一种专门工具测量土壤的有效孔隙体积，以便进行建设项目。