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铜比铅的电阻要小.Copper has less resistance to electricity than lead.电阻的测量单位是欧姆。The electric resistance is measured in ohm.网路电阻超过230欧姆时，读数就完全不准了。When resistance in the circuit exceeds 230 ohms, the reading is not completely depe...

“电阻”的拼音为：diàn zǔ...