久久国产欧美日韩精品,日韩国产精品久久久久久亚洲,99视频精品全部免费免费,91精品国产综合久久走光

有時這些碳棒包上一層銅,以增加其導(dǎo)電性.Sometimes the carbon rods are copper coated to improve electrical conductivity.它們在超導(dǎo)性和普通導(dǎo)電性的臨界線上操作, 產(chǎn)生巨大的放大效果.Operating on the borderline of superconductivity and ordinary conductivity, they produce i...

“導(dǎo)電性”的英語可以翻譯為：[化] electrical conductivity，electroconductivity ...