The driving system use DC servo system of modulating pulse width.
驱动系统采用脉宽调制直流伺服系统。
Modulating the ultrasonic wave, intensity and period of the light pulse will change.
调节超声波，可改变光脉冲的强度和周期。
Now pulsewidth modulating technology is widely used in pulse power needed by electric spark fine machining.
当今脉宽调制技术在电火花微细加工所使用的脉冲电源中得到广泛应用。
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