Research on deeply gas nitriding technological characteristics of pinion steel[J]. MW Metal Forming, 2009, (17): 19-20.
            
            
                
                    | 
                        
                            Citation:
                        
                     | 
                    
                        Research on deeply gas nitriding technological characteristics of pinion steel[J]. MW Metal Forming, 2009, (17): 19-20.
                        
                     | 
                
            
         
        
            
                Research on deeply gas nitriding technological characteristics of pinion steel[J]. MW Metal Forming, 2009, (17): 19-20.
            
            
                
                    | 
                        
                            Citation:
                        
                     | 
                    
                        Research on deeply gas nitriding technological characteristics of pinion steel[J]. MW Metal Forming, 2009, (17): 19-20.
                        
                     |