评定各项威布尔参数和电缆寿命指数N值；

The individual Weibull parameters and the cable life index N are evaluated.

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由于温度和寿命的关系指数，一些小的温度辩变化结果可能会引起一个相对大的寿命的变化。

Because of the exponential relationship between temperature and lifespan, small changes in temperature could result in relatively large changes in lifespan.

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他们选择用于编制生活质量指数的，是四个被广泛测量并得到充分研究的指数：人均GDP、出生时的预期寿命、婴儿死亡率以及肺结核病的发病率。

They chose several widely-measured and well-studied indices on which to base their index: GDP per capita, life expectancy at birth, infant mortality rate and the incidence of tuberculosis.

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