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单词
noble gas
释义
WordReference Random House Unabridged Dictionary of American English © 2024
no
′
ble gas
′
,
[
Chem.
]
Chemistry
any of the chemically inert gaseous elements of group 8A or 0 of the periodic table: helium, neon, argon, krypton, xenon, and radon. Also called
inert gas.
1900–05
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radioluminescent
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更新时间:2025/7/23 18:43:37