起电机 qǐdiànjī electrostatic generator Definitions Defs Origin Strokes Stroke Words Sentences Sents 范德格拉夫起电机 Fàndégélāfūqǐdiànjī Van de Graaff generator 范氏起电机 Fànshìqǐdiànjī Van de Graaff Van de Graaff generator