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| 灭弧角 | |||
| 防闪络角形件; 消弧角 | |||
| 角形避雷器 | |||
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| 消弧角 | |||
| arcing horn: 4 phrases in 3 subjects |
| Electric machinery | 2 |
| Hydroelectric power stations | 1 |
| Shipbuilding | 1 |
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