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| tray-type column | |||
| tray column; tray tower | |||
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盘式塔 : 26 phrases in 7 subjects |
| Chemistry | 2 |
| Metallurgy | 3 |
| Oil / petroleum | 7 |
| Oil and gas | 1 |
| Oil processing plants | 2 |
| Technology | 10 |
| Telecommunications | 1 |
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