The experiment shows that this method is a practical speed governing method.
实验表明，这是一种可行的调速方式。
This paper introduces the fan's principle and ways saving electricity by governing speed.
介绍通风机通过调节速度节省电能的原理和方法。
Frequence conversion and branch drag speed-governing system of print equipment has been studied.
对印染设备变频分部拖动系统进行了深入研究。
Frequence conversion and branch drag speed-governing system of print equipment has been studied.
对印染设备变频分部拖动系统进行了深入研究。
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