expectation E of life估计寿命

complete expectation of life完全平均余命

mean expectation of life平均寿命

expectation of working life预期工作寿命;预期工作生命

curt expectation of life简略平均预期寿命

the expectation of life寿命

curtate expectation of life整数期望寿命;简约平均预期寿命;翻译

loss of expectation of life生命期望的丧失;翻译

comp lete expectation of life完全生命期望