• 利用更换周期具有马尔可夫性质,以系统首次故障平均工作时间大为目标建立了确定最佳更换周期的模型

    Using the property of Markov at the points of replacement period, a model of determining the optimal period is developed with objective of maximizing the mean time to first failure of system.

    youdao

  • 整体而言,平均工作时间比起衰退大幅下滑

    On the whole, average weekly hours are far below their pre-recession level.

    youdao

  • 整体而言,平均工作时间比起衰退大幅下滑

    On the whole, average weekly hours are far below their pre-recession level.

    youdao

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