英语词汇“proportional compass”的意思、释义、用法解释及翻译-春雷网

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词汇	proportional compass
释义	Definition of proportional compass in English: proportional compass noun Chiefly historical a compass having two opposite pairs of legs turning on a common pivot, the position of which is adjustable, so that the distances between the pairs of points on either side of the pivot may be set to any desired ratio. Origin Late 16th century; earliest use found in John Dee (1527–1609), mathematician, astrologer, and antiquary. Definition of proportional compass in US English: proportional compass noun Chiefly historical a compass having two opposite pairs of legs turning on a common pivot, the position of which is adjustable, so that the distances between the pairs of points on either side of the pivot may be set to any desired ratio. Origin Late 16th century; earliest use found in John Dee (1527–1609), mathematician, astrologer, and antiquary.
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