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单词
angular diameter
释义
WordReference Random House Unabridged Dictionary of American English © 2024
an
′
gular diam
′
eter,
[
Astron.
]
Astronomy
the angle that the apparent diameter of a celestial object subtends at the eye of the observer.
1870–75
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更新时间:2025/7/25 17:28:59