And it's actually a useful feedback mechanism.

一种非常有用的反馈机制。

哈佛公开课 - 计算机科学课程节选

It works by a control mechanism called negative feedback, and the thermostat is measuring the temperature and then sending a signal to a heater somewhere.

是通过一种叫做负反馈的控制机制,探测器测量温度,再把信号传给加热器

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