本文首先简述了脉冲放电回路中三电极火花间隙的工作原理，并推导出其电阻的表达式。
In this paper, the work principle of spark gap with three electrodes in pulsed circuit is presented briefly and then the expression of its resistance is given.
该技术方案以小型电火花机床的主轴头和电源控制柜为基础，重点研究了总体结构、电极与工件之间的三坐标移动、电极精确定位、工作液循环系统等关键技术。
The key technologies, the whole makeup, the motion between electrode and workpiece at three coordinates, precise orientation of electrode and cycle system of work liquid are emphatically studied.
介绍了电火花加工用工具电极材料在普通电火花加工、电火花表面改性和微细电火花加工三个方面的最新研究进展。
The latest research progress in tool electrode materials of EDM used in conventional EDM, EDM surface modification and Micro-EDM has been introduced.
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