operating life〔名词〕工作寿命详细»
operating life〔名词〕使用寿命详细»
operating life〔名词〕工作寿命,使用期详细»
operating life〔名词〕工作寿命详细»
operating life〔名词〕工作寿命,使用寿命,运行寿命详细»
operating life使用〔工作〕寿命详细»
使用期限life;life length;lifetime;service life;serviceable life;useful life详细»
使用期限length of life;life span;service life;serviceable life详细»
使用期限age;durability;life;limit of age;operating life;period of service;working service详细»