最終更新日：2022/12/07

hour circle

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(astronomy) The great circle through an object whose location is to be determined and the two celestial poles.

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hour circle

noun

(astronomy) The great circle through an object whose location is to be determined and the two celestial poles.

The hour circle on the clock shows the current time.

意味（1）

(astronomy) The great circle through an object whose location is to be determined and the two celestial poles.