To study one unit repairable system with single repairman vacation, a kind of new maintenance and replacement model is proposed.
针对修理工带有单重休假的单部件可修系统，提出了一种新的维修更换模型。
After a two-week vacation, a man returned to his office and one of his fellow workers asked him what kind of time he's had.
两周的假期后，一位男士回到了办公室。一个同事问起他假期是怎么过的。
After a two-week vacation, a man returned to his office and one of his fellow workers asked him what kind of time he's had.
两周的假期后，一位男士回到了办公室。一个同事问起他假期是怎么过的。
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