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| 31. | plug welding |
| 塞孔熔接 |
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| 32. | permeability plug |
| 测定渗透率的岩心块 |
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| 33. | chamfering plug |
| 去角刀 |
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| 34. | restricted plug |
| 定位塞 |
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| 35. | plug connection |
| 插头联接 |
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| 36. | terminating plug |
| 终端塞子 |
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| 37. | plug resistance |
| 插塞电阻 |
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| 38. | DRAIN PLUG |
| 排放丝堵 |
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| 39. | thermocouple plug |
| 热电偶塞 |
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| 40. | anticoncussion plug |
| 抗振荡耳塞 |
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