The distance of the optical code is detected, and the filter bandwidth is increased in relationship to the distance of the bar code.
检测光学代码的距离，与条形码的距离相关地增加滤波器带宽。
The distance of the optical code is detected, and the filter bandwidth is increased in relationship to the distance of the bar code.
检测光学代码的距离，与条形码的距离相关地增加滤波器带宽。
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