Huang Xian’s product is about the size of his fist, a sensor that detects electrical current leakage and slots into electric vehicle chargers as a safety guard between the car and the grid.
黄先的这款产品大约拳头大小，是一种检测漏电流的传感器，可嵌入电动汽车充电器，在车辆与电网之间充当安全防护。
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