常规的摩托车磁电机参数测量方法是用交流电流、电压表及示波器等仪表进行测量，再从表上进行读数并记录。
The normal parameter-measure method of motor magneto is using alternating current, voltmeter and instrument to measure then read and record the data.
当电压表测量探头2和探头3之间的电压降时，该交流电流在r3上产生的电压降就会引起错误的结果。
The resulting voltage drop across r3 will cause erroneous results when the voltmeter measures the voltage drop between probes 2 and 3.
当电压表测量探头2和探头3之间的电压降时，该交流电流在r3上产生的电压降就会引起错误的结果。
The resulting voltage drop across r3 will cause erroneous results when the voltmeter measures the voltage drop between probes 2 and 3.
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