1.
mean time to failure
平均寿命时间（MTTF）
2.
mean life of excited atom
受激原子的平均寿命
3.
Estimated (Expected) Average Life
预计(预期)平均寿命
4.
High luminous efficacy, average life-span 8000 hrs.
高光效，长寿命，平均寿命长达8000小时。
5.
Life expectancy is now 82.5 years for women and 77.7 years for men.
女性的平均寿命是82.5岁，男性平均寿命是77.7岁。
6.
Mean Life Evaluation on Power LED Through Accelerate Life Test
加速寿命试验评估功率发光二极管平均寿命
7.
The average life expectancy for metastatic colon cancer patients is about2 years.
转移的结肠癌患者平均寿命是2年。
8.
The average life span for the nominee group was just over 76 years.
提名者小组的平均寿命略高于76岁。
9.
The average life expectancy for Russian men is just fifty-eight years.
俄罗斯男人的平均寿命只有58岁。
10.
Life expectancy is now 75.5 years.
现在的平均寿命已达到75。5岁。
11.
The average age of the 70 people is 57.74.
70人的平均寿命为 5 7.74岁。
12.
Even so, the life expectancy rate has increased since last year.
不过，国人平均寿命比前一年成长了。
13.
Inference of Two Mean Life Spans Ratio;
无替换定数截尾寿命试验平均寿命比率统计推断的研究
14.
On the Confidence Limits for the Mean of Exponential Distribution With Non-equal Censored Time;
非等定时截尾寿命试验方案指数分布情形平均寿命的置信限
15.
It said Brighton residents lived to an average of 78 years, a year more than the average of the 15 sampled cities.
调查表明，布莱顿居民的平均寿命为78岁，比15个抽样城市的居民平均寿命长一年。
16.
Safety voltage,use is convenience,Average life is 1000h.
特点：安全电压,使用方便,平均寿命1000小时.
17.
With the average lifespan, marriage and childbearing ages all continuing to rise,
鉴于平均寿命、适婚年龄、和生育年龄持续上升，
18.
And hence the mean lifetimes of the two brands of engines, are equal.
也就是说，两种牌号引擎的平均寿命是相等的。