heliometer

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英 [hi:lɪ'ɒmɪtə]
美 [ˌhili'ɒmɪtə]
是什么意思
  • n.

    太阳仪;测日仪;

  • 英英释义

    heliometer[ ,hi:li'ɔmitə ]

    • n.an instrument used to measure the angular separation of two stars that are too far apart to be included in the field of view of an ordinary telescope
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