单词	center of mass
释义	center of mass noun phrase : the point in a body or system of bodies at which the whole mass may be considered as concentrated Word History First Known Use 1862, in the meaning defined above
随便看	anty over anu anubes anubin anubing Anubis anubis baboon anubises anubisses anucleate anucleated anucleolate anuli anulus anuluses anulusses anunder anunnakies anunnakis Anura Anuradhapura anurae anuran anurans anuras

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