这天，王庆吉从设备“健康档案”记录中查知井下环形车场司控道岔气缸管路上次维修、更换的时间。
That day, Wang Qingji from equipment "health record" records the Secretary identifying the control ring park underground pipeline last turnout cylinder repair, replacement time.
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.
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.
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