 |
| |||
| earth protection installation; ground protection installation | |||
| 接地 保护装置: 5 phrases in 4 subjects |
| Drilling | 1 |
| Electronics | 1 |
| Rail transport | 1 |
| Technology | 2 |
|
| |||
| earth protection installation; ground protection installation | |||
| 接地 保护装置: 5 phrases in 4 subjects |
| Drilling | 1 |
| Electronics | 1 |
| Rail transport | 1 |
| Technology | 2 |