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| 51. | temperature plug |
| 测温用的热电偶 |
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| 52. | galvanized plug |
| 镀锌插头 |
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| 53. | separable plug |
| 连接插头 |
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| 54. | retrievable plug |
| 可收回堵塞器 |
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| 55. | disconnecting plug |
| 接线塞子 |
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| 56. | plug nozzle |
| 塞式喷管 |
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| 57. | contaminated plug |
| 污染段 |
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| 58. | reversible plug |
| 可逆转接驳的插头 |
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| 59. | cylindrical plug |
| 柱状岩心栓 |
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| 60. | plug valve |
| 旋塞阀 |
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