氦
英语翻译
参考释义
- 氦[hài]
- -{化}helium（2号元素，符号He）
双语例句
A colorless, odorless, tasteless, gaseous mixture, mainly nitrogen(approximately78 percent) and oxygen(approximately21 percent) with lesser amounts of argon, carbon dioxide, hydrogen, neon, helium, and other gases.
