 |
| sealing surface: 11 phrases in 7 subjects |
| Agriculture | 1 |
| Agrochemistry | 1 |
| Ecology | 1 |
| Electronics | 1 |
| Environment | 1 |
| Nuclear and fusion power | 1 |
| Technology | 5 |
|
| sealing surface: 11 phrases in 7 subjects |
| Agriculture | 1 |
| Agrochemistry | 1 |
| Ecology | 1 |
| Electronics | 1 |
| Environment | 1 |
| Nuclear and fusion power | 1 |
| Technology | 5 |