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1.This paper introduced the energy saving principle of air intake prerotation adjustment and the application area and method of air intake prerotation regulator.

1.介绍了进气预旋能原理及进气预旋装置范围和法。

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2.This paper introduces the main energy saving technologies of centrifugal pump.And the author proposes a new energy saving technology which is called prerotation regulated by the inlet guide vane.

2.本文介绍了离心泵主要技术,并提出了前置导叶预旋能技术。

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