... optimum angle of attack 最佳攻角 angle of attack drag 攻角阻力 geometrical angle of attack 几何攻角 ...
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It is found that the variation of planforms and geometrical parameters can effect only the drag reduction but little to the low lift in low angle of attack condition.
发现单纯改变涡襟翼的形式和参数能提高减阻效果,但不能改变小迎角下升力过小的现象。
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