乳比重計; 乳液比重計
Galactometer \Gal`ac*tom"e*ter\, n. [Gr. ?, ?, milk + -meter: cf. F. galactom[`e]tre. Cf. {Lactometer}.] An instrument for ascertaining the quality of milk (i.e., its richness in cream) by determining its specific gravity; a lactometer.
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