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61. | pumper test pit |
| 泵浦车试验槽 |
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62. | pit bottom stoop |
| 井筒安全柱 |
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63. | pit silo unloader |
| 青贮窖卸载机 |
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64. | small pit organ |
| 小窝器(鱼中的电感受器) |
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65. | pit-alert sensor |
| 泥浆池液面报警传感器 |
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66. | pump suction pit |
| 泵上水池 |
|
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67. | pit alert system |
| 液位报警系统 |
|
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68. | pit ?pitting corrosion |
| 点状腐蚀 |
|
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69. | pit protection grid |
| 底坑护栅 |
|
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70. | roll change pit |
| 换辊用坑|换辊装置安设坑 |
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