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1 ?使用年限 ... serviceable condition 营运条件,完好状态,... serviceable life 使用年限,耐用年限,... highest priority serviceable member 最高优先服务数... 2 ?资金时间价值 ...可以远离医生 ? An apple a day, you can stay away from doctors 使用年限；折旧方法；资金时间价值；探讨 ? serviceable life; depreciation methods; the money value of time; explore 所以我每次回家都要经过学校后的公园，再去车站赶车。
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Describes the different forms and causes of rupture of crank shaft, and suggests actual measures to prolong its serviceable life. 介绍了织机曲轴的断裂形态、原因，提出延长曲轴寿命的具体措施。 - 2
The durability design of the concrete structure should be done according to the environment types and the designed serviceable life. 混凝土结构的耐久性设计应根据环境类别和设计使用年限进行设计。 - 3
The aeration tube has the advantages of ingenious layout, simple and rational structure, convenient installation, low cost as well as long serviceable life. 该曝气管构思巧妙、结构简单、合理，安装方便，成本低，使用寿命长。
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