... lifespan 寿命，使用期限；存在(正常运行)时间 life-span determination 寿命测定 lifespan study 寿命研究 ...
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研究测定出，每吸一根烟平均寿命折损11分钟，这就意味着成为一名烟民50岁过后将预期寿命会缩短4年。
research has determined that every cigarette decreases one's life expectancy by 11 minutes, and being a smoker shaves four years off of one's life expectancy after 50.
在此基础上，建议了一种通过两次不同电压扫描率的线性电压扫描来测定半导体的体产生寿命和表面产生速度的方法。
On the basis of this, a method of using twice sweep under different voltage sweep rates for determining both bulk generation lifetime and surface generation velocity is proposed.
在测定其荧光寿命及荧光量子产率基础上计算出它们的辐射及非辐射衰变速度常数。
On the base of fluorescence quantum yield and lifetime measurement, the rate constants of radiation decay and non radiation decay of this compound were calculated.
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