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21. | A small potentiometer (often for printed circuit board mounting) that is used for circuit balancing or fine adjustment. |
| 用于电路平衡或微调的一种小型电位器(通常适宜于安装在印刷电路板上)。 |
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22. | block-print vi. |
| 木板印刷;用印刷字体写 |
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23. | metering circuit |
| 仪表电路|测量电路 |
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24. | antihunt circuit |
| 阴尼电路|稳定电路|防振电路|反搜索电路 |
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25. | building-out circuit |
| 附加电路;匹配电路 |
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26. | derived circuit |
| 分支电路|导出电路 |
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27. | trigger circuit |
| 触发电路| 激发电路 |
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28. | observation circuit |
| 监测电路;监听电路 |
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29. | actuating circuit |
| 动作电路|执行电路 |
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30. | acknowledging circuit |
| 警惕电路|确认电路 |
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