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        <description>电阻（Resistor）

定义

对于截面均匀的电阻体，电阻值计算公式如下，从公式可知，电阻与电阻率和长度成正比，与面积成反比: 


R = ρ*L/A (Ω)WIKIPEDIA: Electrical resistance and conductance 


R为电阻值（欧姆）

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