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meridian
子午圈
地平坐标系或赤道坐标系中的大圆,即在地平坐标系中经过北天极的地平经圈,或在赤道坐标系中经过天顶的赤经圈。
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meridian
子午圈
meridian
子午线,子午圈
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meridian
经线,子午线
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meridian
1、子午圈; 2、子午线
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China Environmental Science
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china environment news
China Environment Publishing Group Co.,Ltd
China Ethnic and Folk Dance Compendium
China Ethnic Languages Translation Bureau
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China-EU intelligent city comparative study report
China-EU Summit
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China Expert Committee of World Natural Heritage
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China Fangshan Global GEOPark Museum
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更新时间:2026/7/4 17:43:41