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dian-ping-yu-jing
- 用stc单片机制作的 12伏汽车电瓶预警器,在汽车电瓶电压,降到一定程度时,语音提示,现在电瓶是处于严重亏损呢!还是需要启动发动机充电,-With stc MCU production of 12-volt car battery warning device in the car battery voltage, down to a certain extent, the voice prompts, the battery is now in a serious loss of it! St