如果平均失效间隔时间(MTBF,mean time between failure)或平均 失效前时间(MTTF,mean time to fail)远大于平均修复时间(MTTR,mean time to repair)或者 平均恢复时间(MTTR,...
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27 非参数估计下平均无故障工作时间( Mean Time To Fail, MTTF)及方差的表 达式如式 (3-30)和式 (3-31)。
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MTTF- Mean Time To Fail 次出现故障以后还应问及到平均无故障时间
mean time to fail
平均失败时间
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On the other hand, young couples fail to spend time with their old parents, and some of them are even too mean to provide the old with at least a decent living environment.
另一方面,年轻夫妇们没能花时间和他们的老父母们在一起,有一些人甚至吝啬得不肯给父母提供像样的居住环境。
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By fail, we mean cut and run before giving Iraqis the time and support to establish a stable, democratic government that can stand on its own.
CENTERFORSECURITYPOLICY: What if we lose?
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