摩擦力实验怎么改变坡度啊?
说明说让上下平移,试了几十次没有用
Yes, 物理實驗.力學[體驗版] is completely free and it doesn't have any in-app purchases or subscriptions.
Not enough reviews to make a reliable assessment. The app needs more user feedback.
物理實驗.力學[體驗版] is free.
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