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单词
hour angle
释义
WordReference Random House Unabridged Dictionary of American English © 2024
hour
′
an′gle,
[
Astron.
]
Astronomy
the angle, measured westward through 360°, between the celestial meridian of an observer and the hour circle of a celestial body. Cf.
sidereal hour angle.
1830–40
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更新时间:2025/11/12 13:51:47