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单 轴伸 : 30 phrases in 9 subjects |
| Bridge construction | 1 |
| Chemistry | 4 |
| Engineering geology | 1 |
| Mining | 1 |
| Oil / petroleum | 1 |
| Plastics | 10 |
| Polymers | 7 |
| Space | 2 |
| Technology | 3 |
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