... helical-weld pipe螺旋焊管 helium arc welding氦弧焊 helium shielded welding氦气保护焊接 ...
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... helium 氦 helium arc welding 氦气保护焊 helmet 防护面罩 ...
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helium-arc welding 氨弧焊
helium shielded arc welding 氦弧焊
helium shielded-arc welding 氦气保护弧焊
·2,447,543篇论文数据，部分数据来源于NoteExpress
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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