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油压箱 : 46 phrases in 9 subjects |
| Automobiles | 12 |
| Aviation | 8 |
| Construction | 1 |
| Electric machinery | 1 |
| Electronics | 2 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 2 |
| Rail transport | 1 |
| Technology | 18 |
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