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| 热水供暖系统 | |||
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| 热水加热装置; 热水供暖系统; 热水采暖系统 | |||
| hot water heating system: 24 phrases in 5 subjects |
| Architecture | 1 |
| Hydroelectric power stations | 3 |
| Metallurgy | 1 |
| Refrigeration | 5 |
| Technology | 14 |
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