| 单词 | 电弧焊接 |
| 释义 | 〔argon〕A colorless, odorless, inert gaseous element constituting approximately one percent of Earth's atmosphere, from which it is commercially obtained by fractionation for use in electric light bulbs, fluorescent tubes, and radio vacuum tubes and as an inert gas shield in arc welding. Atomic number 18; atomic weight 39.94; melting point -189.2°C; boiling point -185.7°C. See table at element 氩：无色无味惰性气体元素，构成地球大气约百分之一的部分，它可通过分馏法大量获取，使用于电灯泡，荧光灯及收音机真空管中，并可在电弧焊接中作惰性气体屏蔽物。原子序数18；原子量39.94；熔点-189.2°C；沸点-185.7°C 参见 element |
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