ground joint

• Laboratory glassware ; connections with standard ground joints
  实验室玻璃器具.标准磨口接合的连接件
• Interchangeable spherical ground joints
  可互换磨光球形接头
• Specification for spherical ground joints
  球面接头规范
• Clamps for spherical - ground joints
  球形磨制接头用夹子
• Laboratory glassware ; thermometers with interchangeable ground joint
  实验室玻璃仪器.带可互换磨口接头的温度计
• Laboratory glassware ; graham condenser with standard ground joints
  实验室玻璃仪器.带标准磨制接口的graham冷凝器
• Laboratory glassware ; allihn condensers with standard ground joints
  实验室玻璃仪器.带标准磨制接口的allihn冷凝器
• Laboratory glassware ; dimroth condenser with standard ground joints
  实验室玻璃仪器.带标准磨制接口的dimroth冷凝器
• Laboratory glassware ; soxhlet extractors with standard ground joints
  实验室玻璃器具.标准磨口结合的索克斯雷特萃取器
• Laboratory glassware ; jacketed coil condenser with standard ground joints
  实验室玻璃仪器.带标准磨制接口的套式盘管冷凝器