为了尽量降低噪声和泄漏电阻的影响，应当将电阻器放在一个屏蔽、保护的测试夹具中。
To minimize noise and leakage resistance, the resistor should be placed in a shielded, guarded test fixture.
电阻器通常分为三大类：固定电阻，可变电阻，特种电阻。
Resistor are usually divided into three series: fixed resistors, variable resistor and special resistance.
这样，在不测量该电阻器时，该电阻两端存在的电荷就会通过电路的LO端放电。
This allows any charge across the resistance to be discharged to circuit lo when the resistance is not being measured.
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