焊接保护气体 Welding Gases
焊接级保护气体 welding grade gas ; welding grade shield gas
焊接用保护气 protective gases for welding ; Gases for welding ; Welding ; shielding gas for welding
焊接用保护气体 Protective gases for welding ; shielding gas for welding
自动焊接和气体保护焊 Automatic welding and gas welding
焊接中，氩作为保护气防止金属氧化。
Argon serves as a shielding gas to protect metals from oxidation during welding.
介绍了一种用于焊接现场的气体保护焊的自动混气设备，该设备能精确控制气体混合比例。
This paper introduced an automatic air mixing equipment for gas protection welding at work site, which can control the accurate proportion of airs.
参数控制包括焊接电流，焊接速度，送丝速度，保护气。
Parameter controls for welding current, travel speed, wire speed and shielding gas.
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