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单词
dark-field
释义
WordReference Random House Unabridged Dictionary of American English © 2024
dark-field
(därk
′
fēld′),
USA pronunciation
adj.
[
Optics.
]
Optics
of or pertaining to the illumination of an object by which it is seen, through a microscope, as bright against a dark background.
1860–65
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更新时间:2025/11/23 7:00:43