自发电位 zìfādiànwèi spontaneous potential Origin Definitions Defs Strokes Stroke Words Sentences Sents 自发 自發 zìfā adjective spontaneous occurring naturally without outside influence; to act of one's own accord or initiative电位 電位 diànwèi electric potential the amount of potential energy per unit of charge at a point in an electric field; usually measured in volts