three ring
| design segment
| seal
| three-ring | |
| chem. | 三元环 |
| design segment | |
| avia. | 设计部分 |
| seal | |
| econ. int. law. | 批准; 保证 |
| environ. | 密封机 |
| geol. | 盖层 |
| hydroel.st. | 封口 |
| interntl.trade. | 印记 |
| met. од. | 密封装置 |
| racing | 封印 |
| sport. | 印 |
| |||
| 三元环 | |||
|
three ring : 16 phrases in 6 subjects |
| Chemistry | 2 |
| Compressors | 4 |
| Jewelry | 1 |
| Polymers | 1 |
| Sealing | 4 |
| Technology | 4 |