名词
中文翻译：同轴电缆
同义词：
['balancer', 'transformer']
例句：
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1. The balun is used to connect the antenna to the receiver.
平衡器用于将天线连接到接收机。
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2. The engineer tested the balun's performance before installing it.
工程师在安装之前测试了平衡器的运行性能。
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3. Baluns are essential components in radio and television systems.
在无线电和电视系统中，平衡器是不可或缺的组件。