各种干预措施,如抗感染药物,可以增加人口的平均存活时间,但只有那些减缓人体衰老速度的方法才能延长最长寿命。
Various interventions, such as infection-fighting drugs, can increase a population's average survival time, but only approaches that slow the body's rate of aging will increase the maximum lifespan.
如果知道失效之间的平均时间和平均恢复时间(例如对于硬件),则使用这一部分中的计算方法。
If you know the mean time between failures and the mean time to recovery, e.g. for the hardware, use the calculations in this section.
平均值中不包括每种方法第一次调用的时间,因此初始化时间不是结果中的一个因素。
The time for the first call to each method is not included in the average, so initialization time isn't a factor in the results.
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