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单词 visometer
释义 viˈsometer rare.
[f. L. vīs-us sight + -ometer. Cf. visuometer.]
(See quot.)
1856N. Brit. Rev. Nov. 178 The first person..who constructed and used an apparatus, which he calls a visometer, for determining the focal length of each eye, was Mr. Salom of Edinburgh.
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