In contrast 牛顿力学, 相对论 are fact based, and need to be verified by
回答: 1, 2, + 是定义, 1+1=2 是真理. Mathematical theorems are not based on f
由 passerby2016
于 2019-08-09 12:36:09
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• experiments -passerby2016- ♂ (0 bytes) () 08/09/2019 postreply 13:16:36