All this indicate that GEHP has good part loadcharacteristic and fit for variable speed adjustment.
这说明燃气机热泵部分负荷特性好，可以很好的实现变速调节。
2
According to torque vs. speedcharacteristic of stepping motor, the higher startup speed is, the smaller startup torque is and then the worse the capability of driving load is.
从步进电机的矩-频特性可知，启动频率越高，启动转矩越小，带动负载的能力越差。
3
Against the heavy equipment load and complex operations characteristic, the spindle used vector control technology of ac frequency speed control; the car used advanced ac servo control technology.