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.

本文介绍了离心泵节能的主要技术，并提出了前置导叶预旋调节的节能技术。

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New kinds of LED lighting technology are invading retail stores with a dual purpose: saving energy and luring shoppers.

新型LED技术入侵零售商店有双重目的：节省能源和诱惑顾客。

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Therefore, cutting force and narrow small incision, cut off, less waste material advantages, such as the new technology is energy-saving cutting, new equipment.

因此，有切割时动力小，切口窄，切面平整，材料损耗少等一系列优点，是节能切割的新工艺，新设备。

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However, because each device in the data center typically has its own embedded power supply, enterprise data centers would have to replace all of their devices in order to take advantage of this new energy saving technology.

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