幽灵蝶
回答: 史瓦西时空 太阳本身近乎球形,其周围物质的质量很小,以至于可以被看作真空,以势函数代替保守力,这是一个关键性的发展。重力势是由伯
由 marketreflections
于 2011-01-26 12:36:40
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