柯林斯詞典betatron /?bi?t??tr?n/ 1. N a type of particle accelerator for producing high-energy beams of electrons, having an alternating magnetic field to keep the electrons in a circular orbit of fixed radius and accelerate them by magnetic induction. It produces energies of up to about 300 MeV 電子感應(yīng)加速器 返回 betatron