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| reverse circulation flushing | |||
| indirect flushing | |||
| return flushing; reverse circulation washing | |||
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反循环 冲洗 : 13 phrases in 4 subjects |
| Engineering geology | 2 |
| Explosives and Explosive Ordnance Disposal | 4 |
| Oil / petroleum | 3 |
| Technology | 4 |
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