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单词
focal ratio
释义
WordReference Random House Unabridged Dictionary of American English © 2024
fo
′
cal ra′tio,
[
Optics.,
]
Photog.
Optics, Photography
f-number.
1925–30
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hilton
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himachal pradesh
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himalayan tahr
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himself
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himyaritic
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更新时间:2025/10/14 20:38:18