<del id="2rebt"><ul id="2rebt"><kbd id="2rebt"></kbd></ul></del>
    

        2. 

        
人人爽人人爽人人爽,亚洲欧美一区二区三区在线,久久人妻公开中文字幕,国产欧美精品一区二区三区四区
,少妇人妻精品一区二区,被灌满精子的波多野结衣,国语精品一区二区三区,国产性色av免费观看 



        
    
        
        
        
            
        
            
            
        
                
        
                    
                
        
                
         
                    
        
                        
        
                            
         
                                
        中文English
         
                                 
                                 
                                

        

        

        


        

        

        Service hotline:400-0539655
        

        

        

        

        

        

                            
        
                        
        
                    
        
                    
         
                
        
            
        
            
         
                
        
                
        
                    
        
                        
         
                            
        中文English
         
                             
                             
                        
        
                    
        
                
        
            
        
        
        
    
        
    
    
    
        
        
         
            

        

        


        

        

        Factors affecting the number of drilled plates 
        

        
分類：公司新聞
發(fā)布時(shí)間：2020-04-20 14:01:13
作者: 
來(lái)源: 

        

        　Factors affecting the number of drilled plates
        

        

        

        
Factors affecting the number of drilled plates
        
Provision of the number of PCB drilling plates in and out
        
This is based on the process capability of each division. But related to a few factors
        
1) Thickness
        
2) The smallest drill
        
3) Required accuracy
        
4) Substrate type: The number of substrates is FR4 and CEM-3. The
number of substrates is different. The same substrates have different Tg
values.
        
5) In other cases, such as the slot length of the slot is less than twice the diameter of the drill.