faultless operation

MTBF(mean time between failure) and AF (availability factor) indexes are employed to verify the reliability of power station auxiliaries.

为核验电站辅机的可靠性，本文介绍了以平均无故障运行时间和可用系数为指标。

Han dynasty in order to strengthen the management of the social public security, proclaimed a decree that masses couldn t drink wine together without reason .

汉朝政府为了加强社会治安管理,曾颁布一条禁令,即"三人已上无故群饮酒,罚金四两。

No code breakdown diagnosis has the certain blindness,so it is a difficulty in engine service.

无故障码故障的诊断带有一定的盲目性,是发动机维修中的一个难点。