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单词 specific gravity
释义
specific gravity
noun [ U ] physics specialized uk/spəˌsɪf.ɪk ˈɡræv.ɪ.ti/ us/spəˌsɪf.ɪk ˈɡræv.ə.t̬i/
比重,相对密度(现更常用 relative density)
the mass of a particular volume of a substance when compared with the mass of an equal volume of water at 4°C. A more modern name for this is relative density.
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