So these really dark ones you see, those are hydrogen lines.
所以你看到的这些非常暗的线是氢气线。
单词 | hydrogen line |
例句 |
原声例句
PBS趣味科普 So these really dark ones you see, those are hydrogen lines. 所以你看到的这些非常暗的线是氢气线。 Crash Course 天文篇 At first, stars were classified by the strengths of their hydrogen lines. 起初,恒星是根据其氢谱线的强度来分类的。 |
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