英语词汇“compact h ii region”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	compact h ii region
释义	compact H II region compact H II region [′käm‚pakt ′āch ′tü ‚rē·jən] (astronomy) A region of dense ionized hydrogen in interstellar space, not greater than 1 parsec (1.9 × 10¹³ miles or 3.1 × 10¹³ kilometers) in diameter.
随便看	below all clouds below average below average grade below/beneath the surface below breath below ceiling level below center of mass below costal margin below critical length material below deck equipment below decks belowdecks below decks watch below-deck unit below depot scrap rate below derrick floor below detectable level below detection limit below elbow below-elbow amputation below-elbow (b-e) amputation 170th 1728 175 1750s

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compact H II region