英语词汇“principal vertical circle”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	principal vertical circle
释义	principal vertical circle principal vertical circle [′prin·sə·pəl ′vərd·ə·kəl ‚sər·kəl] (geodesy) The vertical circle through the north and south points of the horizon, coinciding with the celestial meridian.
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