如何比较YAH-63直升机和YAH-64直升机？为什么YAH-63直升机竞标失败? - 知乎
Bud Fletcher | This Day in Aviation
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![1.0] First Generation Cobras](http://www.airvectors.net/avcobra_1_02.jpg "1.0] First Generation Cobras")
1.0] First Generation Cobras
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