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