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本文指出《Planning and Design of Pipeline Irrigation System》一文中给出的表示管灌较渠灌节能程度的节能系数的计算公式是错误的,本文给出正确的节能系数的计算公式,并进行了推导。
This paper points out that the calculation formula of energy-saving coefficient, which shows the degree of energy saving of canal irrigation compared with that of canal irrigation, is given in the article of “Planning and Design of Pipeline Irrigation System”. This article gives the calculation formula of correct energy-saving coefficient and derives it.