An insurance company can tell you the expectation of life of a man forty years of age 保险公司能够告诉你,四十岁人的寿命期望值。
2.
Water - tube boilers and auxiliary installations - in - service boiler life expectancy calculations 水管锅炉和辅助设备.锅炉使用寿命期望值计算
3.
Water - tube boilers and auxiliary installations - part 4 : in - service boiler life expectancy calculations ; german version en 12952 - 4 : 2000 水管锅炉和辅助设备.第4部分:使用寿命期望值计算