 |
| |||
| covered conduit | |||
| buried conduit; buried pipeline | |||
| closed duct | |||
| buried line; buried pipe; close conduit | |||
| closed pipe; earth pipe-line | |||
| закрытый трубопровод: 12 a las frases, 9 temas |
| Construcción | 1 |
| Electrónica | 1 |
| General | 1 |
| Ingenieria termal | 1 |
| Makárov | 3 |
| Misiles | 1 |
| Náutico | 1 |
| Petróleo | 2 |
| Tecnología de petróleo y gas | 1 |