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| 排气分析逆向清洗 | |||
| 反向冲洗; 反向洗井 | |||
| 回洗; 逆流洗涤 | |||
| 反向洗涤 | |||
| |||
| 倒灌的; 反冲的 | |||
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back -flushed : 12 phrases in 5 subjects |
| Architecture | 3 |
| Chemistry | 1 |
| Engineering geology | 1 |
| Oil / petroleum | 2 |
| Technology | 5 |
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