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| 螺旋式换热器 | |||
| 扁平线圈; 平盘蛇管 | |||
| 板管式蒸发器 | |||
| 螺旋板热交换器 (exchanger); 螺旋式换热器 (exchanger) | |||
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| 钢板套管 | |||
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plate coil : 10 phrases in 5 subjects |
| Electric machinery | 2 |
| Metallurgy | 3 |
| Refrigeration | 2 |
| Steel production | 1 |
| Technology | 2 |
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