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| 71. | loading connection |
| 装载接头 |
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| 72. | armature terminal |
| 电枢接头 |
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| 73. | trailer connector |
| 拖车接头 |
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| 74. | GAUGE CONNECTOR |
| 压力表接头 |
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| 75. | dividing adapter |
| 分水接头 |
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| 76. | permanent joint |
| 固定接头 |
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| 77. | solvent cement joint |
| 胶结接头 |
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| 78. | power drilling sub |
| 动力接头 |
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| 79. | outlet connection |
| 出口接头 |
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| 80. | cross joint |
| 十字接头 |
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