Experimental result shows that the method makes the operating voltage of electric-light source maintained at the range required voltage level of power saving.
实验证明，该方法使电光源的工作电压基本保持在所要求的节电等级的电压范围内。
From the point of view of energy-saving, this peper gives a quantitive analysis of the impact of no-water-level operation of feedwater heaters on the economic performance of power plants.
本文从节能角度出发，定量地分析了加热器无水位运行对火电厂热经济性的影响。
Bigger power with force saving is obtained by using the level principle.
利用杠杆原理，省力而获得较大的动力。
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