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阀动装置 : 42 phrases in 12 subjects |
| Agriculture | 1 |
| Automobiles | 4 |
| Aviation | 6 |
| Business | 1 |
| Electronics | 2 |
| General | 3 |
| Hydroelectric power stations | 1 |
| Nautical | 1 |
| Oil / petroleum | 3 |
| Rail transport | 3 |
| Shipbuilding | 6 |
| Technology | 11 |
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