“north-finding instrument”的概念、定义、翻译、参考文献-科学参考

单词	north-finding instrument
释义	north-finding instrument Encyclopedia 工学大地测量仪器释 north-finding instrument;polar finder寻北器用于简易天文定向的北极星观测件。又称北极星观测器、北天极寻找器。
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