Simpler models switch voltage only for doing a step, thus needing an extra currentlimiter: for every step, they switch a single cable to the motor.是什么意思_Simpler models switch voltage only for doing a step, thus needing an extra currentlimiter: for every step, they switch a single cable to the motor.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句