dual valve type

英 美
  • 双阀型
  • dual adj.双重的;成双的n.双数
  • type n.类型;典型;铅字v.打字
  • valve n.瓣膜;真空管;阀门;电子管
    1. Double Check Valve Assemblies shall consist of two positive seating check valves located between two resilient seated shutoffs with four ball valve type test cocks.
      这种双止回阀总成应该由两个正向密封止回阀,夹在两个弹性阀座关闭阀之间,并配置四个球阀型测试旋塞构成。