welding jig的相關資料：
臨近單詞
Welders
weld
welder performance qualification test
Welding restoration of roller surface
welding generator with splitting pole
welding ring stirrups concrete column
welded reinforcement of nozzle opening
Welding data aquisition and processing
welding residual stress and distortion
welding wire containing copper content
welding procedure qualification record
Welding operation sequence optimization
