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飞机螺旋桨工作原理介绍！（带字幕）
欢迎加入“中国旋翼机交流圈”，这里将为大家普及旋翼机知识，介绍旋翼机制作基础，分享旋翼机飞行视频，提供旋翼机制作问题解答，快快加入吧！这里是您实现飞行梦想的摇篮! 加微信qinghangwang
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