In order to avoid the effect of lead resistance and contact resistance in measuring low resistance with DC Wheatstone Bridge, DC Kelvin Bridge is usually used to measure the value of low resistance.

• 为了避免导线电阻和接线端的接触电阻对直流电桥测量低电阻的测量结果产生较大误差，采用凯尔文直流双臂电桥测量低电阻的阻值。