tapered interchangeable ground joint 锥形标准磨口接头

interchangeable ground glass joints 可互换的玻璃磨口接头

interchangeable ground glass joint 可互换玻璃磨口接头

standard interchangeable ground joint 标准磨砂接头

Interchangeable conical ground joint 互换锥形磨砂接头

Interchangeable spherial ground joints 互换球形磨砂接头

Interchangeable conical ground joints 可互换的锥形磨口

Interchangeable spherical ground joints 可互换的球面磨口

Laboratory glassware-Interchangeable conical ground joint 实验室玻璃仪器