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.
利用在更换周期点上具有的马尔可夫性质，以系统首次故障前平均工作时间最大为目标建立了确定最佳更换周期的模型。
The University of Leeds research team has, for the first time, shown that leg muscle dysfunction is related to the severity of symptoms in heart failure patients.
英国利兹大学的研究团队首次发现腿部肌肉功能障碍与心脏衰竭患者病症严重程度之间的相关关系。
You're going to manage to make it roll for a certain amount of time, but at the first sign of failure, they'll cut you right off.
在一定的时间后你能让它‘过去’，但是首先出现的即是失败的讯号，他们会瞬间切断你的事业线。
Second, many of the young addicts turned for the first time to drugs for escape either from their failure in the national entrance exams or from their parents' breakup.
根据四级图表作文命题规律，第一段文章描述了图表中所反映的我国吸毒者年龄的分布最近二十年的变化情况，；
Good acoustics in a recording studio is crucial to the success of a project, and the financial implications of failure means getting things right first time is essential.
录音室中好的音响效果是项目成功的关键，并且项目失败将带来的经济损失让我们明白一开始就把事情做好的重要性。
Good acoustics in a recording studio is crucial to the success of a project, and the financial implications of failure means getting things right first time is essential.
录音室中好的音响效果是项目成功的关键，并且项目失败将带来的经济损失让我们明白一开始就把事情做好的重要性。
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