• Intelligent vehicle detector, based on the induction doughnut coil detecting principle, detects the information of vehicles traveling on the highways.

    基于感应式环形线圈检测原理智能车辆检测器检测公路行驶车辆信息

    youdao

  • To make a seawater antenna, the current probe (an electrical coil roughly the size and shape of a large doughnut) is attached to a radio’s antenna jack.

    制作根海水天线电流探针电子线圈尺寸形状大致相当于一个面圈)要连接一副无线电天线端子上

    youdao

  • To make a seawater antenna, the current probe (an electrical coil roughly the size and shape of a large doughnut) is attached to a radio’s antenna jack.

    制作根海水天线电流探针电子线圈尺寸形状大致相当于一个面圈)要连接一副无线电天线端子上

    youdao

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