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61. | intermediate frequency motor sheep shearer |
| 中频式剪羊毛机 |
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62. | IF measuring set |
| 中频测量装置 |
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63. | medium frequency direction finder |
| 中频测向器 |
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64. | IF repeating system |
| 中频中继系统 |
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65. | medium frequency direction finder station |
| 中频测向台 |
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66. | medium frequency non-directional radio beacon |
| 中频全向无线电信标 |
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67. | TV intermediate frequency modulator |
| 电视中频调制器 |
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68. | intermediate-interference ratio |
| 中频干扰比 |
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69. | medium frequency motor for woodworking |
| 中频木工电动机 |
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70. | intermediate frequency generating station at intermediate voltage |
| 中频电压电站 |
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