名词
中文翻译：环形导线
同义词：
['ring cable', 'ring conductor', 'ring wire']
例句：
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1. The new phone has a ring wire that connects to the main line.
新电话有一个连接到主线的环形线。
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2. The electrical system uses ring wires to connect different parts of the building.
电气系统使用环形线将建筑物的不同部分连接起来。
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3. The ring wire is responsible for transmitting signals between two points in the network.
环形线负责在网络中的两点之间传输信号。