 |
Buchholz | protective unit
| protective unit | |
| tech. | 保护装置 |
|
Buchholz protective unit : 8 phrases in 5 subjects |
| Electric machinery | 1 |
| Hydroelectric power stations | 2 |
| Metallurgy | 2 |
| Rail transport | 1 |
| Technology | 2 |
|
| protective unit | |
| tech. | 保护装置 |
|
Buchholz protective unit : 8 phrases in 5 subjects |
| Electric machinery | 1 |
| Hydroelectric power stations | 2 |
| Metallurgy | 2 |
| Rail transport | 1 |
| Technology | 2 |