设计了一套超声辅助电火花线切割加工的实验装置，并对复合加工的机理和特性进行了研究和探讨。
A set of experimental device that ultrasonic aided wire cut machining has been developed. and the mechanism and inherent nature of combined technology are explored and studied in deep going.
依据正交设计原理设计的试验样本，能充分代表混粉电火花加工技术工艺系统特性；
The samples, according to Orthogonal Design principle, fully represent the systematic characteristic of PEDM.
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