当天，王庆吉在没有到现场的情况下，却知道井下环形车场一个司控道岔气缸管可能漏气，需要更换。
The same day, Wang Qingji in the absence of the case to the scene to find that the Secretary-controlled underground ring park a turnout cylinder tube may leak and need replacing.
实际上，活塞与气缸间再严密也免不了会漏气。
It is not practical to fit the piston to the cylinder closely enough to prevent blow-by.
实际上，活塞与气缸间再严密也免不了会漏气。
It is not practical to fit the piston to the cylinder closely enough to prevent blow-by.
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