|
variable load : 9 phrases in 5 subjects |
| Drilling | 1 |
| Electrical engineering | 1 |
| Energy industry | 1 |
| Technology | 5 |
| Thermal engineering | 1 |
|
variable load : 9 phrases in 5 subjects |
| Drilling | 1 |
| Electrical engineering | 1 |
| Energy industry | 1 |
| Technology | 5 |
| Thermal engineering | 1 |