|
electrically-driven pump : 8 phrases in 4 subjects |
| Facilities | 1 |
| Natural resourses and wildlife conservation | 1 |
| Oilfields | 4 |
| Thermal engineering | 2 |
|
electrically-driven pump : 8 phrases in 4 subjects |
| Facilities | 1 |
| Natural resourses and wildlife conservation | 1 |
| Oilfields | 4 |
| Thermal engineering | 2 |