| |||
обходные трубные пути (BoD OPL) |
pipe loop : 20 phrases in 12 subjects |
Chemistry | 1 |
Construction | 1 |
Drilling | 1 |
Electronics | 1 |
Energy industry | 2 |
Mechanic engineering | 2 |
Metallurgy | 1 |
Oil / petroleum | 2 |
Oil and gas | 2 |
Oil and gas technology | 1 |
Thermal engineering | 5 |
Transport | 1 |