This controller is three digital tube display. When in running state, the digital tube shows the current cleaning channel;
本机为三位数码管显示，运行状态时，数码管显示当前喷吹的回路；
This controller is three digital tube display. When in running state, the digital tube shows the current cleaning channel;
本机为三位数码管显示，运行状态时，数码管显示当前喷吹的回路；
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