PE foam double seal liner is composed of PE foam and two - sided aluminum foil.

PE复 膜垫片是由PE垫片 和双面铝箔所构成的封口垫片,在同类产品中外观美、密封性更强.

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The Submersible Pump and Motor have a double seal with a moisture detection system.

配置潮气监测系统的潜水泵和电机具有双重密封装置.

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The structure and operating principle of double - seal rail valve are introduced in the article.

介绍了双密封导轨阀的结构及工作原理,该阀的密封性能和使用寿命优于普通的闸阀和球阀.

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