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词汇 Rare gases
分类 英语词汇 英语翻译词典
释义

Rare gases

原声例句
Vox 观点

But the United States, who at this time produced the rare gas almost exclusively, embargoed its sale in 1925.

但当时几乎完全独家生产这种稀有气体的美国，在1925年禁止了这种天然气的销售。

英语百科

Noble gas 稀有气体

（重定向自Rare gases）
Image: Helium discharge tube
Image: Neon discharge tube
Image: Argon discharge tube
Image: Krypton discharge tube

The noble gases make a group of chemical elements with similar properties. Under standard conditions, they are all odorless, colorless, monatomic gases with very low chemical reactivity. The six noble gases that occur naturally are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and the radioactive radon (Rn). Ununoctium (Uuo), which was recognised as an element in December 2015, is predicted to be a noble gas as well but this fact is not confirmed.
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