问题
填空题
电阻定律的表达式：R=______．
答案
电阻定律的公式为：R=ρ
．l s
故本题答案为：ρ
．l s
搜题请搜索小程序“爱下问搜题”
电阻定律的表达式：R=______．
电阻定律的公式为：R=ρ
．l s
故本题答案为：ρ
．l s
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