The speed radar detector is a necessity of monitoring vehicle speed for traffic control.
测速雷达是交通管理中监测车辆行驶速度的必备工具。
The precision of count and speed test of inductive loop vehicle detector relates the veracity of traffic flux statistical result, which is verifiable key item.
环形线圈车辆检测器的计数精度和测速精度关系到交通流量统计结果的准确性，是计量检定的关键项目。
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