If the control system specifies an act that changes the environment, the sensors can validate this change, feeding back the new state of the environment to the control system.
如果控制系统指定了一个改变环境的操作，那么传感器就可以验证发生了这种变化，并将环境的新状态反馈给控制系统。
The system shown in Figure 3 is that of a closed loop, with sensors feeding the control system that drive changes in the environment.
图3所示的系统是一个封闭循环，传感器负责为控制系统提供数据，而控制系统则驱动着环境中因素的变化。
The hardware of the system is composed of environment factors' inspection module and control implementation module.
系统硬件主要由环境因子实时监测、执行控制模块组成。
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