英语词汇“principal directions”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	principal directions
释义	principal directions principal directions [′prin·sə·pəl di′rek·shənz] (mathematics) For a point on a surface, the directions in which the normal curvature attains its absolute maximum and absolute minimum values. The directions of the principal axes of a strain.
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