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单词 meridian
释义 meridian
1 See latitude and longitude.
2(magnetic meridian) An imaginary great circle on the earth's surface that passes through the north and south magnetic poles. A compass needle on the earth's surface influenced only by the earth's magnetic field (see geomagnetism) comes to rest along a magnetic meridian.
3(celestial meridian) A great circle of the celestial sphere that passes through the zenith and the celestial poles. It meets the horizon at the north and south points.
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更新时间:2025/6/23 23:48:46