under water welding 水中焊接 ; 水下焊

under-water welding 水下焊

water-gas welding 水煤气焊

water vapour arc welding 水蒸气保护电弧焊

water cooled welding torch 水冷焊炬

water vapor arc welding 水蒸气保护电弧焊 ; 水蒸汽保护焊接

water gas welding 水煤气焊接

water cooled welding 水冷式焊接

Water-cooling welding gun 水冷焊枪

water-vapour welding 水蒸气保护焊