“swinging the arc”的概念、定义、翻译、参考文献-科学参考

单词	swinging the arc
释义	swinging the arc [`swiŋ·iŋ thǝ `ärk] ^NAVIGATION The process of rotating a sextant about the line of sight to the horizon to determine the foot of the vertical circle through a body being observed. Also known as rocking the sextant.
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