(1) 利用激光接收和发射探头接收和发生激光； (2) 该激光系统可以实现各种距离的测量； (3) 能够按键启动/停止，使用单片机进行数据测量，并可以把测量的数据经过LED数字显示。-(1) the use of laser receiving and emitting laser probe for receiving and occurrence (2) The laser system can measure various distances (3) be able