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周边供暖
| 变风量系统
| 周边供暖 | |
| tech. | board heating; border heating; perimeter heating |
| 变风量系统 | |
| hydroel.st. | variable air volume system |
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| board heating; border heating; perimeter heating | |||
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周边供暖 : 6 phrases in 2 subjects |
| Refrigeration | 3 |
| Technology | 3 |
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