Aircraft ground support equipment - General requirements - Part 4: noise measurement methods and reduction.
飞行器地面支持设备。一般要求。第4部分：噪声测量方法和噪声降低。
Work accomplished in support of the structure and systems of an aircraft.
在保障飞机系统和结构时所做的工作。
Work accomplished in support of the structure and systems of an aircraft.
在保障飞机系统和结构时所做的工作。
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