underdrain造句

• Standard specification for asbestos - cement underdrain pipe
  石棉水泥地下排水管的标准规范
• Standard specification for non - asbestos fiber - cement underdrain pipe
  非石棉纤维水泥地下排水管的标准规范
• Filter underdrain system
  滤池配水系统
• Pvc specification for smooth - wall poly vinyl chloride plastic underdrain systems for highway , airport , and similar drainage
  高速公路机场和类似场所排水系统用光滑壁聚氯乙烯
• Pvc standard specification for smooth - wall poly vinyl chloride plastic underdrain systems for highway , airport , and similar drainage
  高速路,飞机场及类似区域排水用光壁聚氯乙烯
• Standard specification for steel sheet , zinc and aramid fiber composite coated for corrugated steel sewer , culvert , and underdrain pipe
  波纹钢制下水沟暗渠和雨水管用锌和芳族聚酰胺纤维复合涂覆钢板的标准规范