 |
| |||
| 严密封闭; 紧密封; 紧封; 密封 | |||
| |||
| 气密密封 | |||
| tight seal: 24 phrases in 9 subjects |
| Architecture | 1 |
| Electronics | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 5 |
| Plastics | 2 |
| Refrigeration | 1 |
| Space | 3 |
| Technology | 9 |
| Telecommunications | 1 |
|
| |||
| 严密封闭; 紧密封; 紧封; 密封 | |||
| |||
| 气密密封 | |||
| tight seal: 24 phrases in 9 subjects |
| Architecture | 1 |
| Electronics | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 5 |
| Plastics | 2 |
| Refrigeration | 1 |
| Space | 3 |
| Technology | 9 |
| Telecommunications | 1 |