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单词
specific-gravity
释义
WordReference Random House Unabridged Dictionary of American English © 2024
specif
′
ic grav
′
ity,
[
Physics.
]
Physics
the ratio of the density of any substance to the density of some other substance taken as standard, water being the standard for liquids and solids, and hydrogen or air being the standard for gases. Also called
relative density.
1660–70
spe•cif
′
ic-grav
′
i•ty
,
adj.
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更新时间:2025/9/21 12:33:14