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| предохранительный тормоз; аварийный шлюз; спасательный шлюз | |||
| предохранительный затвор; аварийный шлюз (沉箱) | |||
| 安全闸: 10 phrases in 5 subjects |
| Electronics | 1 |
| Military | 2 |
| Mining | 1 |
| Oil processing plants | 1 |
| Technology | 5 |
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