at least once in a lifetime a Muslim is expected to make a religious journey to Mecca and the Kaaba
carrier lifetime
[电] 载子活期
fluorescence lifetime
[化] 荧光寿命
lifetime curve
[计] 寿命曲线
lifetime employment
[经] 终身雇用
lifetime function
[计] 寿命函数
lifetime of excited state
[化] 激发态寿命
lifetimes
n. 一生, 寿命( lifetime的复数形式 ); 有生之年
mean lifetime
[化] 平均寿命
once-in-a-lifetime
adj. 千载难逢的
radiative lifetime
[化] 辐射寿命
surface lifetime
[计] 表面寿命
volume lifetime
[电] 体积寿命