airproof connection PVC material 电缆连接密封材料
flexible airproof 柔性密封
airproof f 不漏气的 ; 不通气的
airproof pipes 密封管道
Soft airproof main valve can obtain high airproof in the scope of over 95% lift pressure.
软密封的主阀瓣能在95%以上的开启压力范围内获得高密封度。
In this paper, we introduce the airproof principle of butyl chloride rubber and the factors related to the airproof.
介绍了氯化丁基橡胶气密性基本原理及影响气密性能的因素。
With strengthened steelwork and tighten jointing in each part, the cab has superior airproof and security performance.
在加强了钢铁及收紧拔节，在每一个部分，驾驶室具有优异的气密性和安全性能。
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