I1:I=1:4
I1:I2=1:3
R1:R2=3:1
电阻r1 r2并联 通过r1的电流为干路电流的四分之一 r1r2的阻值关系
电阻r1 r2并联 通过r1的电流为干路电流的四分之一 r1r2的阻值关系
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其他人气:279 ℃时间:2020-01-27 02:48:43
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