unpowered control

例句：

1. 1.The unpowered control system is responsible for monitoring the temperature in the room.
   无动力控制系统负责监控房间的温度。
2. 2. The unpowered control system was designed to prevent accidents during construction.
   无动力控制系统被设计用来在施工过程中防止事故。
3. 3. The unpowered control system has been used in many industrial applications.
   无动力控制系统已经被广泛应用于许多工业应用中。