实验室里可以用欧姆表来直接测量电阻.如图虚线框内是欧姆表的简化结构图它由灵敏电流表电源变阻器等组成.在ab间接入一个电阻r电路中就有 Template




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tomski实验室里可以用欧姆表来直接测量电阻.如图虚线框内是欧姆表的简化结构图它由灵敏电流表电源变阻器等组成.在ab间接入一个电阻r电路中就有 coloring