“H I region”的概念、定义、翻译、参考文献-科学参考

单词	H I region
释义	H I region [¦āch `wǝn ´rē·jǝn] ^ASTRONOMY A region of interstellar space where neutral hydrogen is present.
随便看	natural resonance natural resource natural scale natural science natural-seasoned lumber natural selection natural splitting natural steel natural transmission natural tunnel natural uranium natural uranium reactor natural ventilation natural ventilation pressure natural wavelength natural well natural width of energy level Naucoridae Naucoroidea naujaite naumannite nauplius nausea nautical almanac nautical astronomy

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