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| 21. | extruded porous sections |
| 挤压多孔零件 |
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| 22. | inorganic porous material |
| 无机多孔材料 |
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| 23. | porous diaphragm device |
| 多孔隔膜仪 |
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| 24. | porous pay zone |
| 多孔产层 |
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| 25. | porous diffuser plate |
| 多孔扩散板 |
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| 26. | porous water sand |
| 多孔含水砂层 |
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| 27. | porous layer support |
| 多孔层载体 |
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| 28. | porous bronze bearing |
| 多孔青铜轴承 |
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| 29. | porous polymer beads |
| 高分子多孔小球 |
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| 30. | porous plug experiment |
| 多孔塞实验 |
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