Some aeronautical and aerospace technicians specialize in avionics (navigational and communications equipment), flight testing, or quality control.
一些航空专家专攻于航空电子技术(导航及通讯设备)，飞行测试，质量管理。
Some aeronautical and aerospace technicians specialize in avionics (navigational and communications equipment), flight testing, or quality control.
一些航空专家专攻于航空电子技术(导航及通讯设备)，飞行测试，质量管理。
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