To ensure low leakage current and low dielectric absorption, the feed back capacitor should be made of a suitable dielectric material such as poly styrene, polypropylene, or Teflon.
为了保证低泄漏电流和低介电吸收，反馈电容器应当由合适的介电材料(如聚苯乙烯、聚丙烯或聚四氟乙烯)制成。
To minimize the effects of dielectric absorption on current measurements, avoid applying voltages greater than a few volts to insulators being used for sensitive current measurements.
为使电流测量时的电介质吸收影响减到最小，用来做对极小的电流测量的绝缘体，应避免施加大于数伏的电压。
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