“髻籽羊齿科”的概念、定义、翻译、参考文献-科学参考

单词	髻籽羊齿科
释义	髻籽羊齿科 Encyclopedia 理学古植物学释 None髻籽羊齿科种子植物的一科。种子具有双角，状似发髻，因此而得名。分类位置不明确。
随便看	axiom of restriction axiom of separation axiom of subsets axiom of substitution axiom of sum-set axiom of syllogism axiom of symmetry axiom of the empty set axiom of the power set axiom of the sum set axiom of union axiom of unordered pair axiom schema axiom schema of replacement axiom schema of separation axioms for cohomology axioms for generalized cohomology axioms for generalized homology axioms for homology axioms of countability axioms of statics axiom system axion axiotron AXIS

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。