 |
| |||
| warning lights (Alexander Demidov) | |||
| beacon mounted on top of high power line support; light mounted on top of high power line support | |||
| светоограждение: 4 短语, 2 学科 |
| 建造 | 3 |
| 电气工程 | 1 |
|
| |||
| warning lights (Alexander Demidov) | |||
| beacon mounted on top of high power line support; light mounted on top of high power line support | |||
| светоограждение: 4 短语, 2 学科 |
| 建造 | 3 |
| 电气工程 | 1 |