例如变频驱动器如果有必要的话可以直接被连在通讯网络或硬线上。
Such as variable frequency drives can be further connected directly to the communications network or hardwired if necessary.
免维护高力矩无刷变频电机直接驱动，启动力矩大、加速时间短。
Maintenance-free brushless drive motor with frequency inversion, has high start torque and short acceleration time.
该机床直接用电主轴驱动主动轮带动锯丝运动，由变频调速器控制锯丝的速度。
The driving wheel was driven by a electric spindle, and the cutting speed was controlled by converter governor.
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