本文描述实验确定岩石弥散性的理论和方法；

In this paper the theory and method used for determining dispersivity experimentally are described.

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距离阴极越远的位置产生的离子对阴极的损伤不主要集中在中心区域，而是弥散性的；

The ions produced far away from cathode have smaller effects on cathode, and their damage to the cathode does not concentrate on the center but is distributed everywhere;

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弥散性圆线虫病的死亡率为90%。

Disseminated strongyloidiasis has a 90% mortality.

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