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| 51. | A fitting connected to a power supply and equipped to receive a plug. |
| 插座联结着电源的插座，可以接纳插头 |
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| 52. | plug and socket-outlet |
| 插头插座 |
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| 53. | polarized receptacle |
| 极化插座 |
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| 54. | four-way(tube) box |
| 十字接头，四通接头 |
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| 55. | trailing socket |
| 移动式插座 |
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| 56. | To plug in(an electrical cord or device) to an outlet. |
| 插入插座把（电线或电器）插入插座 |
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| 57. | telephone socket |
| 电话插座 |
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| 58. | analyzing adapter |
| 检验接头|分析接头 |
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| 59. | a light-BulB socket. |
| 灯泡插座 |
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| 60. | rosette plate |
| 插座式极板 |
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