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| bolt steel; bolting steel | |||
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螺栓钢 : 26 phrases in 7 subjects |
| Automobiles | 4 |
| Compressors | 1 |
| Construction | 1 |
| Metallurgy | 4 |
| Oil / petroleum | 1 |
| Steel production | 1 |
| Technology | 14 |
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