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| 有螺杆和螺母可用作螺栓的钩子 | |||
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bolt hook : 19 phrases in 11 subjects |
| Automobiles | 1 |
| Bridge construction | 2 |
| Chemistry | 1 |
| Drilling | 1 |
| Hydroelectric power stations | 1 |
| Mechanic engineering | 1 |
| Metallurgy | 1 |
| Nautical | 1 |
| Rail transport | 1 |
| Technology | 8 |
| Telecommunications | 1 |
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