Also, the more you consume these substances, the more you want them — in other words, it's a positive feedback system.

而且，这些东西是越吃越想吃，换句话说，这就是所谓的正反馈系统。

Most hormone production is managed by a negative feedback system.

大多数激素的产生是由一个负反馈系统控制的。

And at some point, the positive feedback system starts to work.

在某些时候，正反馈系统开始工作。

Salt, on the other hand, is a negative feedback system — the desire for salt decreases as the sodium content of the body rises.

而盐是一种负反馈系统——人体对盐的欲望随着体内钠含量的增加而递减。

And also we developed a way in which we get to pass the sensation from the fingertips into my forearm using haptic feedback system.

我们还开发了一种方法，使用触觉反馈系统将指尖的感觉传递到我的前臂。

They will probably also like a new feature ResearchGate is planning to introduce in April: a feedback system which lets users rate each other's contributions.

反馈机制 – 允许用户对他人的成绩评分。