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	Heydrich heyducks Heyerdahl Heymans Heyward Heywood Hezekiah hf HFC HFM hfs hg Hgb HGH hgm hgs hgt hgwy HH HHD hheth HHG HHS hi hi-def

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