semi automatic welding 半自动焊接

semi-automatic welding machine 半自动焊接机 ; 半自动电焊机

Automatic or semi-automatic welding 自动或半自动焊

Either automatic or semi-automatic welding 自动或半自动焊

semi-automatic welding 半自动焊接 ; 半自动焊

manual semi-automatic welding 手工半自动焊

semi-automatic arc welding machine 半自动弧焊机 ; 半自动电弧焊机

semi-automatic arc welding 半自动弧焊 ; 半自动电弧焊

semi-automatic welding gas mixture 混合气体半自动焊接