... 氨弧焊 helium-arc welding 活性气体保护电弧焊 metal active-gas arc welding 混合气体保护电弧焊 mixed gas arc welding ...
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helium arc welding 氦弧焊 ; 氦气保护焊
helium shielded arc welding 氦弧焊
helium shielded-arc welding 氦气保护弧焊
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Helium is used for arc welding and leak detection, mostly, although NASA USES it to pressurize space shuttle fuel tanks.
虽然美国宇航局用它来给航天飞船的燃料箱加压，氦主要还是用来做弧焊和裂纹检测。
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Gaseous helium is used as an inert shielding gas in metal arc and laser welding.
在金属电弧和激光焊接中气态氦用作惰性屏蔽气体。
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