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单词 echelle
释义 echelle
I. \āˈshel\ noun
(-s)
Etymology: French échelle ladder
: a lacing of ribbons on the stomacher of a 17th century costume
II. noun
(-s)
Etymology: French échelle ladder, from Old French eschiele, from Late Latin scala — more at scale
: a diffraction grating made by ruling narrow flat steps on a plane metallic mirror and having a grating space and resolving power intermediate between an echelette and an echelon
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更新时间:2024/9/22 19:32:22