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单词 compass card
释义

WordReference Random House Unabridged Dictionary of American English © 2024
compass card′, [Navig.]
  1. Nautical, Naval Termsa circular card with magnets attached to its underside, the face divided on its rim into points of the compass, degrees clockwise from north, or both, and floating or suspended from a pivot so as to rotate freely.
  • 1870–75

Collins Concise English Dictionary © HarperCollins Publishers::
compass card n
  1. a compass in the form of a card that rotates so that "0°" or "North" points to magnetic north
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