在其他情况下，涉及的许可要求和费用则驱动这些决策。
In other cases, licensing requirements and the expenses involved drive these decisions.
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 system shown in Figure 3 is that of a closed loop, with sensors feeding the control system that drive changes in the environment.
如果流程逻辑为事件驱动的，则使用状态机实现。
Use the state machine implementation if the process logic is event driven.
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