hydrogen 21-centimeter line

英 [hydrogen 21-centimeter line]
美 [hydrogen 21-centimeter line]

中文释义

[光] 氢２１－厘米谱线

单词分析

单词结构：

hydrogen 21-centimeter line

字母数：27

记忆提示

🎯 重点记忆：

  • 单词拼写：hydrogen 21-centimeter line
  • 核心含义：[光] 氢２１－厘米谱线

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更新时间：2026-02-05 08:01:31