range at economic speed 中文意思是什麼
range at economic speed
解釋
經濟速度航程-
Abstract : the authors that the variable frequency speed is applicable and economic only in some range to the irrigation and drainage pumping station at the present time
文摘:文中通過對灌排泵站採用變頻調速的適用性及經濟性進行分析研究,提出目前灌排泵站採用變頻調速並非具有廣泛適用性,該調節方式僅在一定適用范圍內具有經濟合理性。
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