16．在“测定�属的电阻率 的实验中所 用的电阻丝rx的阻值约为3Ω变阻器最大阻值为20Ω电源电压为3v电源内阻可忽略 所用器材如 Sketch Coloring Page

16．在“测定�属的电阻率 的实验中所 用的电阻丝rx的阻值约为3Ω变阻器最大阻值为20Ω电源电压为3v电源内阻可忽略 所用器材如 Template

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tomski16．在“测定�属的电阻率 的实验中所 用的电阻丝rx的阻值约为3Ω变阻器最大阻 coloring

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16．在“测定�属的电阻率 的实验中所 用的电阻丝Rx的阻值约为3Ω变阻器最大阻值为20Ω电源电压为3V电源内阻可忽略 所用器材如 sketch template

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