短語詞組短語Sand bag drain method 水工法sand -drain foundation 砂井地基inverted sand -drain filter 地質(zhì)排水反濾層Sand drain method 砂滲法;工法;砂井排水法sand drain ground 砂井地基Method sand drain 砂滲法soil with sand drain 砂井地基sand drain roadbed 砂井路基Sand drain space 砂井間距 返回 sand drain