software pll造句

The software includes procedures to control and monitor the ups such as software pll ( phase - locked loops ) , the value modulation of the output voltage , the producing of pwm signals and kinds of protections the control system and operation principal are analyzed and verified by detailed simulation and experiment results
系统软件部分则包括ups各种系统功能的实现，其中主要研究了软件锁相环(市电跟踪) 、有效值调节、各类保护、 pwm波的生成、闭环控制等的实现。
It's difficult to find software pll in a sentence. 用software pll造句挺难的