 |
| |||
| annular tubes | |||
| |||
| concentric double pipe; concentric inlet and outlet; concentric pipe | |||
| концентрические трубы: 26 phrases in 11 subjects |
| Armored vehicles | 1 |
| Astronautics | 1 |
| Chemistry | 1 |
| Drilling | 9 |
| Energy industry | 1 |
| Military | 1 |
| Oil / petroleum | 3 |
| Oil and gas | 4 |
| Oil and gas technology | 2 |
| Oilfields | 1 |
| Refrigeration | 2 |