| 1. | Standard specification for interchangeable spherical ground joints 可互换的圆球形接头 |
| 2. | Interchangeable spherical ground glass joints 可互换式球面磨口玻璃接头 |
| 3. | Laboratory glassware ; interchangeable spherical ground joints 实验室玻璃仪器.可互换球形磨口 |
| 4. | Interchangeable spherical ground joints 可互换磨光球形接头 |
| 5. | Specification for spherical ground joints 球面接头规范 |