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| pore chain (porocatena) | |||
| 孔链: 50 phrases in 10 subjects |
| Automobiles | 4 |
| Construction | 1 |
| General | 4 |
| Metallurgy | 1 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Shipbuilding | 1 |
| Technology | 35 |
| Textile industry | 1 |
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