介绍了新型止回阀的防水锤结构特性和装配方法。
Introducing the structure characteristic with resistance hammer and assembly method of new type check valve.
第三层是层非常薄、紧密的结构以增强防水。
The third layer has a very thin, dense structure that increases water resistance.
本实用新型具有结构简单、安全，抗拉性好，防水的优点。
The utility model has the advantages of simple structure, safety, high pull resistance and water-proof.
并研究解决有利于盾构隧道主体结构受力的防水方式。
And the waterproofing measures are studied to take to favor the effect on the structural.
另外，还要确保最外面的大衣是用致密结构的防水材料制成的。
Also, make sure outerwear is made of water resistant and tightly knit material.
另外，还要确保最外面的大衣是用致密结构的防水材料制成的。
Also, make sure outerwear is made of water resistant and tightly knit material.
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