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| 折流板洗涤塔 | |||
| 挡板塔; 挡板〔层板式蒸馏〕塔; 【铁】 折流板洗涤塔 | |||
| baffle tower: 5 phrases in 3 subjects |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Technology | 2 |
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