Company profits in 2008 year - on - year revenue growth, become main fan - megawatt class.

公司2008年收入利润 同比 大幅增长, 兆瓦级风机渐成主力.

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In this paper silicon rectifier applied in energy _ saving alternation of main fan in coalmine is introduced.

介绍串级调速技术在煤矿主通风机节能改造中的应用.

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The economic reasonableness of mine main fan ventilation and measures of saving power are expounded the.

阐述了矿井主扇通风的经济合理性及节约主扇电耗的措施.

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