将面团切成大小相等的四块。
如何做好大小相等的段分段还原和?
How to do segmented reduction sum of segments of equal size?
啊哈,这我会做了,最大静摩擦方向斜向上-,大小相等,方向相反。
Aha! If that's the case, I know - that the maximum force is now pointing upwards — the same magnitude, but it has now a different direction.
The force is not known, but it's the same force.
力的大小未知,但与前一个力大小相等
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