英语词汇“principal radii”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	principal radii
释义	principal radii principal radii [′prin·sə·pəl ′rād·ē‚ī] (mathematics) The radii of curvature of the normal sections with maximum and minimum curvature at a given point on a surface; the reciprocals of the principal curvatures.
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