英语词汇orthohelium怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	orthohelium
释义	orthohelium 英/ ???θ??hel??m / 简明释义 n.正氦网络释义 1 [化学]?正氦 ... orthography 正字法；表音法；正交射影；正射投影 orthohelium 正氦 orthohydrogen 正氢 ... 词源 1 orthohelium: ortho- +? helium FROM: wiktionary
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