正反转
Positive and Negative Rotation
微速差双转子系统
Dual Rotor System with Slightly Different Speed
双转子质量流量计
twin-rotor mass flowmeter
双转子永磁电机
Dual-rotor permanent magnet machine
双转子连续混炼机
double rotor continuous mixer
双转子连续混炼
double rotor continuous mixer
双转子径向永磁电机
Dual-rotor radial-flux permanent magnet machines