“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	geometry deformation geometry in the large geometry of bundles geometry of circles geometry of compass geometry of complex domains geometry of connection geometry of diagrams geometry of elliptic curves geometry of fabric structures geometry of geodesics geometry of immersed manifolds geometry of lattice points geometry of motion geometry of nets geometry of numbers geometry of paths geometry of photomeasurement geometry of planes geometry of position geometry of ruler and compass geometry of spaces geometry of spheres geometry of tetrahedrons geometry of the Universe

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。