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贝尔/波音公司联合研制的V-22倾转旋翼飞机贝尔公司新型“休伊”训练直升机一一_吃一 法、中、新三国合作研制的 EC 20.5吨级民用直升机一迈向未来的新型军用和民用直升机
Bell / Boeing joint development of the V-22 tilt rotor aircraft Bell’s new “Hugh” training helicopters __ eat a law, the three countries jointly developed by the EC 20.5-ton civilian helicopter into the future of a new type of military And civilian helicopter