然后仪表通过同一套测试引线来测量电阻两端的电压，并计算出相应的电阻数值。

The meter then measures the voltage across the resistance through the same set of test leads and computes the resistance value accordingly.

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对测试引线和DUT进行屏蔽(图3 - 6)常常能够将这种干扰的影响降低到可以接受的水平。

Shielding the test leads and the DUT (Figure 3-6) will often reduce interference effects to an acceptable level.

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在使用较大的电流时，这一点特别重要。因为和接点两端的电压降相比，测试引线两端的电压降可能会比较大。

This is especially important when higher currents are used because the voltage drop across the test leads may be large compared to the voltage drop across the contact.

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