低激发惰性气体
lower excited states of rare gas atoms
多功能惰性气体系统
Multi functional inert gas system
惰性气体保护焊
inert gas arc welding
inert gas shielded welding
inert gas welding
Inert-Gas welding
惰性气体保护钨极电弧焊
tungsten arc inert gas welding
gas tungsten-arc welding (GTAW
TIG welding