“spiny tree fern”的概念、定义、翻译、参考文献-科学参考

单词	spiny tree fern
释义	spiny tree fern Encyclopedia 理学蕨类植物释 spiny tree fern桫椤蕨类植物桫椤目桫椤科桫椤属的一种。又称刺桫椤。
随便看	principal congruence relation principal congruence subgroup principal conjecture principal conjunctive normal form principal connex principal convergent principal coordinates of neighbour matrics principal crossed homomorphism principal curvature principal curve principal curves principal deformation principal determinant principal diagonal principal diameter principal dielectric axes principal direction principal direction of curvature principal discrete series principal disjunctive normal form principal distribution parameter principal divisor principal dual ideal principal element principal element elimination

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