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单词 chromometer
释义

> as lemmas

chromometer
chromometer n.
Brit. /krəˈmɒmᵻtə/
,
U.S. /krəˈmɑmədər/
[see -meter comb. form2; compare chromatometer n.] an instrument for determining by means of colour the presence of minerals in ores.
ΘΚΠ
the world > the earth > minerals > ore > [noun] > instrument determining presence of minerals
chromometer1876
1876 S. Kens. Museum Catal. No. 3720 Weber's Photo and Chromometer.
1879 Athenæum 5 Apr. 444/2 An instrument which he has designed for making accurate determinations of the presence of certain minerals in ores, to which he has given the name of a ‘chromometer’.
extracted from chromo-comb. form
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