在测量电阻率非常高的材料时，背景电流可能会引起测量误差。
When measuring materials with very high resistivity, background currents may cause measurement errors.
结果表明，随着掺硼浓度的增加，电极的电势窗口略微变小，背景电流也随之变大。
The results show that with the increase of the boron dopant density, the potential windows of the electrodes become narrower and the background currents become larger.
进行了控制电位、支持电解质种类等条件选择，使得测定背景电流小，标准偏差低于0。
The selection of conditions on controlled potential, the kinds of supporting electrolyte and so on lessns the background current and makes the standard deviation less than 0.
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