digital modulation system造句

• Modular design is adopted in digital modulation system . in this way digital modulation system consist of vedio process module , synchronized drive module , semiconductor laser modulation and system control module
  数字化调制系统采用模块化设计方法，把系统分为四个功能模块，即视频信号处理、同步驱动、半导体激光调制和系统控制模块。