n. half-life
misc. half-value period
... half-value layer ==> 半价层,半衰减层,半吸收层,半值层 half-value period ==> 半寿命,半衰期 half-value thickness ==> 半吸收厚度,半值层,强度减半厚度 ...
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对于缺口疲劳试样，则采用半寿命阶段的疲劳参数的预测结果为最小。
As for notched specimen, the fatigue life prediction using fatigue factors of half-life section is the smallest.
毕竟，目前82岁的平均寿命每10年增加近两岁半，而在生育高峰期出生的那一代日本人将要开始进人退休年龄。
After all, average life expectancy, now 82, is growing by almost 2.5 years every decade, while Japan's big baby-boom generation is just about to start moving into retirement.
吸烟有百害而无一利，但却容易成瘾，因此危害是致命的：吸烟者中三分之一到一半的人寿命缩短。
Vile indeed, but habit-forming and therefore lethally dangerous: it cuts short the lives of between a third and half of its practitioners.
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