观看免费视频 Why Airplanes Fly

(43.9 MB) 添加日期15 Nov 2020 播放101次 教育 飞机 Tutorial How it works Review
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Why Airplanes Fly

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How do planes fly in the air? In order for the planes to stay in the air, it needs to have a good balance between Gravity, Lift, Drag, and Thurst.