负电 fùdiàn negative electricity Origin Definitions Defs Strokes Stroke Words Sentences Sents 正负电子对撞机 zhèngfùdiànzǐduìzhuàngjī electron-positron collider a particle accelerator designed to cause collisions between electrons and positrons正负电子 zhèngfùdiànzǐ electrons and positrons electrons and their antiparticles, positrons