The Auto-step-feeding punching to make 4 holes in bending chain plate[J]. MW Metal Forming, 2009, (7): 61-64.
            
            
                
                    | 
                        
                            Citation:
                        
                     | 
                    
                        The Auto-step-feeding punching to make 4 holes in bending chain plate[J]. MW Metal Forming, 2009, (7): 61-64.
                        
                     | 
                
            
         
        
            
                The Auto-step-feeding punching to make 4 holes in bending chain plate[J]. MW Metal Forming, 2009, (7): 61-64.
            
            
                
                    | 
                        
                            Citation:
                        
                     | 
                    
                        The Auto-step-feeding punching to make 4 holes in bending chain plate[J]. MW Metal Forming, 2009, (7): 61-64.
                        
                     |