0.20mA时,电流表读数为
=____________.
④为减少实验误差,提高测量精确度,上述实验应做哪些改进?
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- 答案
0.20mA时,电流表读数为
=____________.
④为减少实验误差,提高测量精确度,上述实验应做哪些改进?
____________________________________________________________________________
____________________________________________________________________________