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- Helium and argon are monatomic gases. 氦和氩都是单原子气体。
- All full-penetration joints shall be back purged with argon or helium. 所有全熔透焊接接头用氩或氦进行反吹。
- A colorless, odorless, tasteless, gaseous mixture, mainly nitrogen(approximately 78 percent) and oxygen(approximately 21 percent) with lesser amounts of argon, carbon dioxide, hydrogen, neon, helium, and other gases. 空气一种无色、无嗅、无味的气体混合物，主要由氮气(约占78％)和氧气(约占21％)组成，还有少量的氩、二氧化碳、氢、氖、氦及其它气体。
- Helium and neon are inert gases. 氦和氖为惰性气体。
- Like their smaller counterparts from the Sudbury crater, these larger structures contained extraterrestrial helium, neon and argon. 这些大型富勒烯与索德柏立的富勒烯一样，都藏有源自太空的氦、氖、氩。
- Preliminary investigations of samples from Graphite Peak indicate that fullerenes are present and contain extraterrestrial helium and argon. 从南极石墨峰采集的标本，初步研究的结果显示其中藏有外太空的氦与氩。
- The antimatter equivalent of helium. 反氦与氦等价的反物质
- The crystals were cleaned by argon ion bombardment. 结晶体由氩离子轰击而净化。
- Suitable for MMA, argon arc, arc gouging welding. 可用于手工电弧焊、氩弧焊、电弧气刨.
- Helium was discovered on the sun. 氦是在太阳上发现的。
- Most big balloons are now filled with helium. 现在许多大气球中充的是氦气。
- A fountain of helium spurt out of the tube. 有一股氦的喷泉从小管中喷出。
- It is a diagram of the crude argon. 这是粗氩系统的流程图。
- Helium is a gas used in balloons. 氦是一种用于气球的气体。
- Atoms of hydrogen are fused to make helium. 氢原子可熔合成氦。
- The element of helium was first found in the sun. 氦元素最初是在太阳里发现的。
- You can be a helium hea without even trying. 你真是个大傻瓜，甚至连试都不试一下。
- Hydrogen provided more lift than helium. 氢气的上升性能优于氦气。
- The tube is blanketed in an inert gas such as nitrogen or argon. 管子被整个地漫浸在流动的氮或氩等惰性气体中。
- It gets the hydrogen and helium right. 根据结果表示，氢元素和氦元素都比较正常。
