...组织相关部门对国产数控机床的可靠性检测试验中，抽检某类型国产加工中心的平均故障间隔时间（Mean Time Between Failures MTBF）还只有 145 小时，远远落后于进口加工中心的 300 小时左右16。工业“母机”可靠性的缺失，成为阻挡我国工业化进程的一块心病。
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When purchasing a piece of hardware, consider its mean time between failures (MTBF), and stockpile reserves accordingly. Here are some rules of thumb.
在购买硬件时，要考虑它的平均故障间隔(MTBF)并相应地储备备用硬件。
The paper introduces a practical method to calculate the mean time between failures (MTBF) of ac servo controllers, using the components counting prediction method.
介绍了采用元器件计数预计法的伺服驱动控制的平均故障间隔时间(MTBF)实用计算方法。
Theoretic calculations show that with redundancy control the mean-time-between-failures (MTBF) of the vacuum system is doubled at least.
通过计算，冗余控制可使整个负压系统的平均无故障工作时间至少增加一倍。
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