英语词汇“index prism”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	index prism
释义	index prism index prism [′in‚deks ‚priz·əm] (navigation) A sextant prism which can be rotated to any angle corresponding to altitudes between established limits; the bubble or pendulum sextant counterpart of the index mirror of a marine sextant.
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