powered fixed wing aircraft
Railroad support equipment and systems (铁路支撑设备和系统) Powered fixed wing aircraft (动力固定翼飞行器) Civilian and commercial rotary wing aircraft (民用、商用直升机) ..
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powered fixed wing aircraft
动力固定翼飞机
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Finally, AgustaWestland surprised the HeliExpo crowd by revealing that it has been secretly testing an electrically powered tiltrotor, mixing the versatility of a vertical takeoff and land helicopter with the speed and range of a fixed-wing aircraft.
FORBES: Helicopter Industry's Success Secret: Market Diversity