Regenerative or positive feedback, and a closed loop gain of unity.

蓄热式或正反馈，一个团结的闭环增益。

Then a method of electrical regenerative braking is brought up to realize feedback energy when the motor is braking.

又提出了一种能量回馈制动的方法，实现了电机制动时能量的回馈。

The regenerative indirect evaporative cooling with the positive feedback principle, can further decrease the temperature of the prime air stream and expand the useful range of available energy.

回热式间接蒸发冷却具有正反馈式工作原理，能进一步降低一次空气温度，扩大有用能的利用范围。