The functions, the principle of operation energy saving, system composition and operational principle of the converter are presented.
介绍了控制系统的功能、运行节能原理、系统组成和变频器工作原理。
The composition of the energy consumption is introduced of the 1 and 2 DL in Baosteel, energy saving details are also analyzed in recent years.
介绍宝钢1、2烧结工序能耗的构成情况，分析了近几年来1、2烧结的节能降耗实绩。
The composition is very well written, saving that there are a few spelling mistakes.
除了几个拼写错误外，这篇作文写得很好。
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