后者是由压力与排烃组成的负反馈控制系统，在其作用下孔隙流体压力不断降低。

The latter is mainly under the control of the processors of hydrocarbon expulsion and thus influences the pressure decrease accordingly. Based on the above analysis, a new model was constructed.

youdao

控制系统可按所使用的反馈类型即正反馈和负反馈来区别。

They include positive and negative feedbacks by their type of feedback.

youdao

So that's a negative feedback control system.

这就是负反馈控制系统得名的原因

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