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| 采暖立管 | |||
| 供暖立管 | |||
| 采暖系统立管; 采暖的下供立管 | |||
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| 加温器利用排气热量自动加热进气歧管的装置。主要部件是一个装在排气歧管中的温控阀门 | |||
| heating riser: 2 phrases in 2 subjects |
| Refrigeration | 1 |
| Technology | 1 |
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