# 超導性 superconductivity 某些金屬在低溫下失去所有阻抗的物理現象;電流可以自由通過具超導性的物質,而不會消散任何能量;近年也發現,某些材料(如某些陶瓷)在較高溫時也會出現超導現象。——《物理之美》
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