上课把女同桌内裤摸湿,一线高清视频在线观看www国产,色综合伊人色综合网站下载,男人边吃奶摸下边免费视频,精品综合久久久久久蜜月

    • <sup id="ql6g2"><dd id="ql6g2"><label id="ql6g2"></label></dd></sup>
  • <sup id="ql6g2"></sup>
    <dfn id="ql6g2"></dfn>
    <sup id="ql6g2"></sup>
    

      <samp id="ql6g2"></samp>
      • <samp id="ql6g2"><rt id="ql6g2"><tbody id="ql6g2"></tbody></rt></samp>
        <tt id="ql6g2"><tfoot id="ql6g2"></tfoot></tt><fieldset id="ql6g2"><rp id="ql6g2"><thead id="ql6g2"></thead></rp></fieldset>
          









          
    
          
        
          
            
          
                
                
            
          
        
          
    
          

          

          
    
          
        Products
        
          
    
          
    
    
          
        

        
          
            
          
                
          
                    YG403-Ⅱ Protective clothing method electrostatic tester (Faraday tube method)
                
          
                
          
                    
                
          
                
          
                    
                        
          
                        
          【Scope of application】
          

          It is mainly used to measure the charged electricity and the density of charged charge of anti-static work clothes and textiles.
          

          【Guideline】
          

          GB 19082-2009 Technical requirements for medical disposable protective clothing 5.9 Antistatic property
          

          GB/T 12703-1991 Textile electrostatic test method 7.2 Friction zone point of work clothes (E method)
          

          GB/T 12703.2-2009 Evaluation of electrostatic properties of textiles Part 2: Charge density
          

          GB/T 12703.3-2009 Evaluation of electrostatic properties of textiles Part 3: Charge
          

          GB/T 32610-2016 Technical Specification for Daily Protective Masks A3.2.2 Pretreatment Method
          

          【technical parameter】
          

           1. Measuring range: ±0.001µC～2µC (±1×10-9～±2×10-6C).
          

          2. Display: LED display, which can display the positive and negative polarity of the charge. (The "-" sign is displayed for the negative polarity, and the sign is not displayed for the positive polarity).
          

           3. Accuracy: ±0.5% of reading.
          

           4. Power supply: 220V, 50Hz alternating current, power consumption is about 3W.
          

           5. Applicable environment: -10℃～45℃, RH<80%.
          

           6. Friction table size: 400mm×400mm×30mm.
          

           7. Faraday tube size: inner tube diameter 400mm, outer tube diameter 500mm, inner and outer tube height 1000mm.
          

           8. Friction table weight: about 2.5kg.
          

           9. Faraday tube weight: about 15㎏.