Newton's laws are in high school textbooks
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送交者: gyro 于 2009-10-26, 13:36:19:
回答: 你杀了我吧。 由 @ 于 2009-10-26, 12:27:08:
In my text of 初中物理, there is lever principle, static pressure in liquid, some electricity, optics, heat. Vector and its components are too advanced. Cos(x) is in the third year of junior middle school.
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