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研究广义相对论所需数学工具贴子汇总
回答: 在麦克斯韦对场方程的表述中就只包含了最少的时空导数。 我们如今知道, 统治电动力学的方程包含有带任意阶时空导数的项, 但那些项就
由 marketreflections
于 2010-10-24 10:41:59
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