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| thread plug | |||
| closing screw | |||
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螺纹 塞 : 31 phrases in 10 subjects |
| Automobiles | 5 |
| Compressors | 1 |
| Drilling | 1 |
| General | 1 |
| Management | 1 |
| Metallurgy | 3 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Plastics | 2 |
| Technology | 15 |
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