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led zai dian ci xue shi yan jiao xue zhong de ying yong
Pages: 33-35
Year: Issue:  2
Journal: Experiment Teaching and Apparatus

Abstract: <正>一、引言在电学的实验教学过程中往往存在一些缺陷,例如,示教大型灵敏电流计灵敏度不够,10μA以下的瞬时峰值电流显示不出来,20μA峰值电流显示可见度仍然很小,显示反应慢,指示值与实际电流不能及时同步,会出现由于指针系统的惯性而引起的错误指示,没有电流指针还会左右摆动,电流的方向性无法准确判断;还有在实验演示
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