短語詞組短語automatic gas -shielded welding 氣體保護自動焊inert gas -shielded welding 惰性氣體保護焊co gas -shielded welding machine co2氣體保護焊機metal -arc gas-shielded welding 氣保護金屬極電弧焊;金屬極氣保護焊co 2 gas -shielded welding co氣體保護焊CO2 gas -shielded welding inverter 逆變CO2焊機vertical automatic gas -shielded welding 垂直自動氣體保護焊 返回 gas shielded welding