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二、原理 平衡鸟之所以会平衡,仅仅因为整只鸟实际的重心在嘴尖这点的下方。虽然看起来鸟全身在空中,但是实际鸟的翅膀重量很轻,全身的重心还是在手指上。
如图,手指的支点是B点,鸟的重心在A点,就像一个篮子挂在手指上一样,鸟能够稳稳的被托住。
三、制作方法



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