 |
| |||
| 自紧式密封 | |||
| 自紧密封; 自动密封 | |||
|
automatic seal : 13 phrases in 8 subjects |
| Aviation | 1 |
| Chemistry | 1 |
| Economics | 1 |
| General | 1 |
| Management | 1 |
| Metallurgy | 1 |
| Sealing | 5 |
| Technology | 2 |
|
| |||
| 自紧式密封 | |||
| 自紧密封; 自动密封 | |||
|
automatic seal : 13 phrases in 8 subjects |
| Aviation | 1 |
| Chemistry | 1 |
| Economics | 1 |
| General | 1 |
| Management | 1 |
| Metallurgy | 1 |
| Sealing | 5 |
| Technology | 2 |