使用年限: age limit; durability; durable years; duration of service; life expectancy; life span; lifetime; limit of age; operational life; physical life; service life; service period after completion; tenure of use; useful life; working life
估定: assessment使用年限: service life额定寿命；额定使用年限: rated life估定使用期: estimated usable period使用年限: age limit; durability; durable years; duration of service; life expectancy; life span; lifetime; limit of age; operational life; physical life; service life; service period after completion; tenure of use; useful life; working life已使用年限: in the years already spent柱使用年限: column durability（设备的）使用年限: service life安全使用年限: safe service life; safety service life标准使用年限: guide life; guideline life残存使用年限: remaining life; remaining useful life船舶使用年限: life of ship服务使用年限: service life工程使用年限: life of project工具使用年限: the service life of a tool估计使用年限: estimate useful life; estimated service life; estimated useful life结构使用年限: structural life-time经济使用年限: economic life可靠使用年限: proven life模具使用年限: mold life; mould life平均使用年限: average life period; average serviceable years; average useful life设备使用年限: duration of service设计使用年限: design life剩余使用年限: remaining durable years实际使用年限: physical life
