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| 进出口孔［压力容器］ | |||
| 流液洞 | |||
| flow hole: 12 phrases in 6 subjects |
| Compressors | 1 |
| Engineering geology | 1 |
| Mining | 2 |
| Oil / petroleum | 2 |
| Plastics | 1 |
| Technology | 5 |
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