英语词汇“atomic number 69”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	atomic number 69
释义	atomic number 69 基本英英 🌏原子序数69 Noun: a soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime
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