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| female pipe thread | |||
| internal pipe thread | |||
| 管内 螺纹: 44 phrases in 14 subjects |
| Automobiles | 4 |
| Aviation | 3 |
| Chemistry | 3 |
| Compressors | 1 |
| Construction | 1 |
| Drilling | 2 |
| Earth sciences | 1 |
| Electronics | 1 |
| Mechanic engineering | 1 |
| Metallurgy | 3 |
| Nautical | 1 |
| Oil / petroleum | 6 |
| Shipbuilding | 1 |
| Technology | 16 |
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