垂直圏
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く
け
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Meanings
1
vertical circle
Astronomical term: a great circle on the celestial sphere passing through the zenith and nadir, perpendicular to the horizon.
The altitude of a celestial body is measured along the vertical circle.
vertical circle
Astronomical term: a great circle on the celestial sphere passing through the zenith and nadir, perpendicular to the horizon.
The altitude of a celestial body is measured along the vertical circle.