“原始髓木目”的概念、定义、翻译、参考文献-科学参考

单词	原始髓木目
释义	原始髓木目 Encyclopedia 理学古植物学释 None原始髓木目出现于早石炭世，以茎干解剖中包含双向形成层和拥有裸子植物的繁殖器官为主要特征的一类植物化石。
随便看	regular outer measure regular packing regular pair regular parameterized surface regular parametric representation regular parametrization regular parametrized curve regular part regular partial differential equation regular patch regular path expression regular pencil of matrices regular pentagon regular permutation regular permutation group regular perturbation regular perturbation system regular p-gon regular p group regular p-group regular point regular point of a curve regular point of a mapping regular point of an operator regular point of the boundary

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。