时间：2014-06-13 13:17来源：蓝天飞行翻译 作者：航空词典
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vibrating beam accelerometer vibrate acoustical test visual envelope visual extinction meter D flow visual gain visual head- up image altn vent CB dome visual lag visual laydown delivery visual lead time visual lead obrd visual manoeuvring area runway ovrd visual met conditions visual observables visual observator visual orientation |
