the rare gases的意思|示意

The brief history of discovery of rare gases and of their frist compounds were introduced in this article. We got some important inspirations from this brief history.

简要介绍了希有气体元素的发现和第一个希有气体化合物的合成经过，提出了从中可以得到不少有益的启示。

The author gave a summary on the SBS characters of newly appeared SBS medium, such as LAP crystal, liquid tetrachlorides, heavy fluorocarbon and rare gases.

本文综述了三类SBS介质的一般特性，对于新出现的表现出良好的SBS特性的介质如：LAP晶体，四氯化物液体，碳氟化合物液体及稀有气体作了综述。

To abate the pollution of industrial waste gases, containing CO and organic hydrocarbons, a copper-rare earth oxide catalyst of monolithic form was developed.

研究了含铜-稀土氧化物的非贵金属蜂窝状催化剂，目的是用于含烃类工业废气的净化。

Rare gases in different spheres of the earth have different characteristic isotopic ratios.

地球不同圈层的稀有气体同位素具有不同的特征同位素比值。

The results showed that the main occupational hazardous factors were rare-earth dusts and toxic gases.

调查结果表明，该厂的主要职业危害因素是稀土粉尘和多种有害气体对人体的联合作用。

Gaseous argon is tasteless, colorless, odorless, non corrosive, and nonflammable. Argon belongs to the family of rare inert gases.

气态氩无味，无色，无嗅，无腐蚀性，不可燃。氩属于稀有惰性气体家族。