“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 budget regular canonical system regular cardinal regular cardinal number regular category regular cell complex regular chain regular character regular circular cone regular circular cylinder regular circumscribed polygon regular class regular class of divisors regular closed curve regular closed set regular closed subspace regular closed ultrafilter regular closure regular cluster regular cluster of galaxies regular coloring regular commutator regular compensation regular complete intersection regular complex function

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。