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测定索座

測定索座(源自拉丁文the log and line)是約翰·波德在1801年創建,意圖取代尼可拉·路易·拉卡伊在稍早(1750年代)創建的羅盤座。測定索是在船尾放入水中的一串繩索,用來測定船的速度。其他的天文學家都未曾使用這個名稱。

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测定索座
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