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止水阀 : 40 phrases in 9 subjects |
| Architecture | 1 |
| Electric machinery | 1 |
| Hydroelectric power stations | 3 |
| Mechanics | 1 |
| Metallurgy | 1 |
| Nautical | 1 |
| Refrigeration | 2 |
| Shipbuilding | 3 |
| Technology | 27 |
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