Chinese translation for "用户数字交换系统"

customer digital switching system

Similar Words：

"用户数据文件" Chinese translation, "用户数据协议" Chinese translation, "用户数据组" Chinese translation, "用户数量" Chinese translation, "用户数目指标" Chinese translation, "用户数字模拟控制器" Chinese translation, "用户数字配线架" Chinese translation, "用户水表" Chinese translation, "用户顺序号码" Chinese translation, "用户说明" Chinese translation