The model test tried on this system did not use the tachometer generator but used rotor electromotive force instead to form the speed negative feed-back system.

本绕线式电动机转子电路脉冲调速系统模拟试验，省去了测速发电机，而利用转子电势组成速度负反馈系统。

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We should not share our dreams with negative people, nor feed our dreams with negative thoughts.

我们不应与消极的人共同分享我们的梦想，也不应把我们的梦想提供给消极的情绪。

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Whether you procrastinate, feed negative self-talk, or don't rest your mind, you lower your potential to create happiness.

不管是拖延、消极的自我对话，或是不让大脑休息，这些都会降低你获得幸福的潜能。

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This creates a self-sustaining negative feed back loop as prices fall, produces cut back production, creating more unemployment, reducing demand, which increase deflationary pressures.

FORBES: American Political Economy Alters English Language

Based on a recent quality check, we made an adjustment to the news feed algorithm to respond to the negative feedback signals of spam and people hiding posts.

FORBES: Facebook Wants Me To Pay $49 To Promote A Post. Not Going To Happen.

Users have taken to Twitter to express their comments, many negative, about the new font size in the news feed.

FORBES: Facebook: Testing Smaller Font To Make Site 'More Efficient'