open loop remote control system

例句：

1. 1. The openloop remote control system is easy to use and requires no additional equipment.
   开环遥控系统使用方便，不需要额外设备。
2. 2.The closed loop control system is more complex but offers better accuracy and stability.
   闭环控制系统更复杂，但提供更好的精度和稳定性。
3. 3.In the open loop remote control system, the user can only control the device by pressing a button.
   在开环遥控系统中，用户只能通过按下按钮来控制设备。