Silver bar back anaglyph peony flowers diagram, reposing people to wealth and auspicious wishes. F.
银条背面浮雕牡丹百花图,寄托人们对富贵、吉祥的祝愿。
The free-body diagram, it says you can pick any one body that you like and apply F = ma to it, provided you identify all the forces acting on that body.
所谓隔离法,就是说你可以任意 选取一个物体,分析出它所受的所有力后,单独对其运用 F = ma 进行计算
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