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橡胶层 : 66 phrases in 14 subjects |
| Architecture | 1 |
| Automobiles | 5 |
| Bridge construction | 3 |
| Chemistry | 2 |
| Construction | 1 |
| General | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Plastics | 1 |
| Polymers | 3 |
| Shipbuilding | 3 |
| Space | 2 |
| Technology | 32 |
| Textile industry | 9 |
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