But diffeomorphism invariant theory leaves some problems to be explained, and the meanings of spacetime and physical theory are still in question.
但微
同胚不变理论存在需要解
题，空时及物理理论意义
不明确。
同胚But diffeomorphism invariant theory leaves some problems to be explained, and the meanings of spacetime and physical theory are still in question.
但微同胚不变理论存在需要解题，空时及物理理论意义不明确。
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