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单词 refracter
释义 reˈfracter Obs.
[f. refract v. + -er1.]
= refractor 3 b.
1761Hirst in Phil. Trans. LII. 397 A 4 feet refracter, of Mr. Dollond's new construction.1763Short ibid. LIII. 341 He used an 18 foot refracter.
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更新时间:2024/12/22 14:28:55