energy-saving principle的用法和樣例：
例句
- This paper introduced the energy saving principle of air intake prerotation adjustment and the application area and method of air intake prerotation regulator.
介紹了進(jìn)氣預旋調節的節能原理及進(jìn)氣預旋調節裝置的應用范圍和使用方法。 - The principle of the equipment of transducer is introduced, as well as the notice of the energe-saving of the injection machine.
介紹了變頻調速節能裝置的節能原理，注塑機節能改造的注意事項。
