来自司玉美的问题
星形连接公式变成三角形连接公式的推导步骤R1+R2=R12(R23+R31)/(R12+R23+R31)R2+R3=R23(R31+R12)/(R12+R23+R31)R3+R1=R31(R23+R12)/(R12+R23+R31)怎么推导为R12=(R1R2+R2R3+R3R1)/R3R23=(R1R2+R2R3+R3R1)/R1R31=(R1R2+R2R3+R3R
星形连接公式变成三角形连接公式的推导步骤
R1+R2=R12(R23+R31)/(R12+R23+R31)R2+R3=R23(R31+R12)/(R12+R23+R31)
R3+R1=R31(R23+R12)/(R12+R23+R31)怎么推导为
R12=(R1R2+R2R3+R3R1)/R3R23=(R1R2+R2R3+R3R1)/R1
R31=(R1R2+R2R3+R3R1)/R2求步骤啊
1回答
2020-03-20 18:43