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单词
optical wedge
释义
WordReference Random House Unabridged Dictionary of American English © 2024
op
′
tical wedge
′
,
Optics
a wedge-shaped filter whose transmittance decreases from one end to the other: used as an exposure control device in sensitometry. Also called
wedge.
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更新时间:2026/9/18 23:27:14