“hyperbolic secant”的概念、定义、翻译、参考文献-科学参考

单词	hyperbolic secant
释义	hyperbolic secant [¦hī·pǝr¦bäl·ik `sē´kant] ^MATHEMATICS A function whose value is equal to the reciprocal of the value of the hyperbolic cosine. Abbreviated sech.
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