...关键字: 随机序列; 预期寿命; 弗雷德霍姆方程; 诺依曼级数; 差分微分方程[gap=581]Key words: random sequence; expected life; Fredholm's equations; Neumann's series; differential-difference equations...
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Expected life time 使用寿命 ; 激光器使用寿命
expected life span 预期寿命
depreciation-sum of expected life 预计年限总数折旧
the expected life 预期寿命
expected life year 期望寿命
average expected life 平均期望寿命
expected life-period method 期望寿命法
expected life of the mine 矿井的设计使用年限
·2,447,543篇论文数据,部分数据来源于NoteExpress
The expected life-span of Beijing residents has gone up to 75.
北京居民的预期寿命已经达到75岁。
Areas with the shortest expected life spans are largely in the South.
预期寿命最短的地区主要集中于南方。
In a poll last year, only 44% said they expected life for blacks to get better, down from 57% in 1986.
去年的一项民调显示,只有44%的人说他们期待黑人的生活会逐步改善,比86年抽调的57%有明显下降。
"It is unfair because he has done nothing wrong." The five men face life in prison and are expected to be sentenced in December.
VOA: standard.2009.10.17
The expected life spans increased dramatically in the last couple of hundred years until now, for people that were born when you were born you can expect to live to be 80 years old, a doubling in life span, fairly dramatic.
从几百年前到现在,预期寿命显著增长了,你们同期出生的那批人,能够活到八十岁,预期寿命增长了一倍,令人印象深刻
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