每一种新型飞机投入使用前必须制订一份维修大纲，以保持飞机的固有安全性和可靠性。
The maintenance program must be prepared to insure the security and reliability before operating for the new type aircraft.
确定飞机结构偶然损伤检查间隔是制定飞机结构维修大纲的关键问题之一。
One of the most important things in developing aircraft structure maintenance program is to determine the inspection intervals for structure accidental damage.
确定飞机结构偶然损伤检查间隔是制定飞机结构维修大纲的关键问题之一。
One of the most important things in developing aircraft structure maintenance program is to determine the inspection intervals for structure accidental damage.
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