PM motors, conversely, derive the field from high energy permanent magnets, so that no power is required to build the motor field and more power can be devoted to torque generation.
下午电机，反之，从外地获得高能永磁材料，这样就没有权力要求，以建立电机领域和更大的权力可用于扭矩一代。
PM motors, conversely, derive the field from high energy permanent magnets, so that no power is required to build the motor field and more power can be devoted to torque generation.
下午电机，反之，从外地获得高能永磁材料，这样就没有权力要求，以建立电机领域和更大的权力可用于扭矩一代。
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