有几种因素可能会使测量这些材料电阻率的工作复杂化，其中包括与材料实现良好接触的问题。
Several factors can complicate measuring the resistivity of these materials, including problems in making good contact with the material.
效果相当于跨工作应变片加了一个分流电阻器一样。
The effect is the same as that of placing a shunt resistor across the active gage.
有些绝缘体的性能会随施加的电压发生变化，因此评估绝缘电阻的预期工作电压是非常重要的。
The properties of some insulators change with applied voltage, so it is important to evaluate IR at or above the expected operating voltage.
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