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| 联结装置松放式挂钩 | |||
| 带防脱钩机构的牵引钩; 安全拖曳钩 | |||
| 释放钩 | |||
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release hook : 10 phrases in 6 subjects |
| Business | 1 |
| Hydroelectric power stations | 2 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Shipbuilding | 1 |
| Technology | 4 |
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