The utility model relates to a breaker for earthed faulty lines, with a function of indicating the end of service life.
本实用新型涉及一种具有寿命终止指示功能的接地故障线路断路器。
The KC-135, a cousin of the Boeing 707, entered service in the Eisenhower era and is near the end of its design life.
由波音707改装的KC - 135，是在艾森豪·威尔当政时服役的，(服役时间)已经接近设计寿命。
Human task service: the back-end service for managing the life cycle of tasks.
人工任务服务：管理任务生命周期的后端服务。
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