3 、经济性使用寿命（economic service life）：是结构物使用到继续维修保留已 不如拆换更为经济时的期限。 目前，人们所说的使用寿命基本上是指结构的技术性使用寿命。
基于12个网页-相关网页
... full economic service life 最经济使用寿命 economic production life 经济开采寿命 economic service life 经济寿命 ...
基于8个网页-相关网页
vehicle economic service life 车辆经济使用寿命
full economic service life 最经济使用寿命
economic service life prediction 经济使用寿命预测
The insurance industry, as the inevitable component of the financial service industry, has played an important role in economic life.
保险业作为金融服务业的重要组成部分，在经济生活中的作用日益提高。
By importance degree they are: media propaganda, service and establishment, environmental factor, economic factor, life style, health factor, occupation and social onus factor.
按重要程度依次是媒体宣传因素、服务设施因素、环境因素、经济因素、生活方式因素、健康因素、职业和社会负担因素。
The optimal service life of a mine is discussed theoretically from economic point of view by analysing the cost and benefit.
本文采用成本与效益分析的方法，从经济上对矿井合理服务年限的定量问题，作了理论上的探讨。
应用推荐