事故频度率是指每百万小时发生的伤害事故的频率，它表示在当前的安全生产水平下，一个人在一生的工作时间中可能发生的事故次数。
The LTA rate is expressed as the ratio of reportable accidents to 1,000,000 man-hours - the assumed number of hours worked by one person during a lifetime.
事故频度率是指每百万小时发生的伤害事故的频率，它表示在当前的安全生产水平下，一个人在一生的工作时间中可能发生的事故次数。
The LTA rate is expressed as the ratio of reportable accidents to 1,000,000 man-hours - the assumed number of hours worked by one person during a lifetime.
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