“HⅡ区和HⅠ区”的概念、定义、翻译、参考文献-科学参考

单词	HⅡ区和HⅠ区
释义	HⅡ区和HⅠ区 Encyclopedia 理学星际物质释 HⅡand HⅠ I regionsHⅡ区和HⅠ区以氢（电离氢或氢原子）为主要成分的星际气体云。又称电离氢区和中性氢区。
随便看	sensory test sensory threshold sensualism sensuous scholarship sentence sentence alignment sentence comprehension Sentence Depth Hypothesis sentence dictionary sentence form sentence-forming functor sentence of S-P as predicate sentence pattern sentence pattern, sentential form sentence stress sentencing discretion sentencing procedure sentential sentential calculus sentential combination sentential connective sentential form sentential formula sentential function sentential logic

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。