... 飞行仿真器 flight simulator 飞行认证测试 flight test certification 倒装 flip ...
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certification flight test 动力装置飞行试验
flight certification test 取证飞行试验
type certification flight test 型号合格审定试飞
·2,447,543篇论文数据，部分数据来源于NoteExpress
The inventors estimate a test-flight could take place in less than a year and a half with final certification by 2010.
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