总: assemble; gather; put togeth ...可用: available; usable时间: time; hour比: 2可用时间比: serviceability ratio硬件可用时间比: hardware serviceability ratio不可用时间: down time; unavailable time可用时间: availability time; available time; available working time; pot life; serviceable time; uptime; usable life; usable time; utime避难可用时间: tae =time available for escape机器可用时间: available machine time; machine available time; machine-available time可用时间选项: available time options平均可用时间: mean utime显示可用时间: show time available累积不可用时间: accumulated down time平均不可用时间: mdt mean down time; mdt; mean down time氧气储备可用时间: oxygen duration装卸货可用时间: time allowed to平均累积不可用时间: mean accumulated down time数与扣除不可用时间和: bbe时间比: time ratio; timeratio总可用性，总利用率: overall availability工作时间比: working time ratio故障时间比: down time ratio开关时间比: on off ratio; on off time ratio; on-off ratio; on-off time ratio控球时间比: ball possession percentage
