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deling control system using IEC 61499[M]. Institution of Electrical Engineers,2001. [14]CHRISTENSEN J H. Basic concept of IEC 61499 [ C ] .Fachtagung Verteilte Automat isierung, Magdeburg DE,2000: 22 23. [15]IEC 65/ 240/ CD, Function blocks for industrial – process measurement and control systems Part 1: Architecture[ S] . 1999. [16]IEC 61499 2 ( and Committee Draft to be published ) ,Function blocks for industrial process measurement and control systems Part 2: Engineering Task Support[ S].1999 [17],. Improving agricultural water use efficiency in arid semiarid areas of china. Agric. Water Manage, 2006. (13):2340指導教師意見:教師簽字:年 月 日畢業(yè)設計領導小組意見: 組長簽字:年 月 日