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| horn arrester | |||
| arc horns | |||
| arc horn; arcing horn | |||
| 角 形 避雷器: 5 phrases in 5 subjects |
| Air defense | 1 |
| Electric machinery | 1 |
| Hydroelectric power stations | 1 |
| Shipbuilding | 1 |
| Technology | 1 |
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