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| 环形料筒 | |||
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ring cylinder : 18 phrases in 10 subjects |
| Automobiles | 1 |
| Compressors | 1 |
| Computer numerical control | 1 |
| Earth sciences | 1 |
| Electronics | 2 |
| Oil / petroleum | 1 |
| Plastics | 2 |
| Shipbuilding | 1 |
| Technology | 5 |
| Textile industry | 3 |
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