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2026-02-06

“polyzonal”的英文意思

单词 polyzonal
释义 polyzonal, a.|pɒlɪˈzəʊnəl|
[f. poly- + zonal.]
Applied to a form of lens invented by Brewster, composed of a number of annular segments or zones; chiefly used in lighthouses.
1831Brewster Optics xxxviii. 323 Those compound lenses, to which I have given the name of polyzonal lenses.1863Tyndall Heat xvii. 504 With a large polyzonal lens, Melloni converged an image of the moon upon his pile.c1865J. Wylde in Circ. Sc. I. 258/2 A polyzonal lens, such as was employed..at the South Foreland lighthouse.
“polyzonal”的英文意思

　

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