讨论了单位长度伸长接地体的冲击特性真型试验方法，给出了冲击火花放电特性和伏安特性的试验结果。

This paper discusses a test method for impulse characteristic of real extended grounding electrode in unit length and gives some experimental results.

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试验表明该装置体积小、质量轻、引弧能力强，实现了无火花放电器引弧。

The volume of the unit is small and the weight is light and the starting arc is strong. The starting arc of not spark is realized.

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为有效地实现微细金刚石砂轮的修锐，建立单脉冲电火花放电去除加工的试验系统，研究金属结合剂的气中和液中电火花放电去除机理。

In order to realize dressing of fine diamond grinding wheel effectively, removal behavior of metal bond for dry and wet coolants is investigated.

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