Next to silver copper is the best conductor of electricity. To have its highest conductivity the copper must be pure, and more than half of the pure copper produced is used in the electrical industry.
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释义
铜是仅次于银的最良导电体。铜必须提纯才可获得最好的导电性能。生产出的纯铜一半以上都用于电气工业。
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