短語詞組短語low perviousness 低透水性soil perviousness 土壤通透性perviousness test 透水度試驗;透水性試驗light perviousness 光透射excavation perviousness 基坑降水rate of perviousness 透濕率perviousness of coal mine 礦井透水perviousness test factor 滲水系數(shù)perviousness of mire 沼澤透水性 返回 perviousness