英语词汇“自由電子”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	自由電子
释义	自由電子 zì yóu diàn zǐ金属导体中的自由电荷。金属原子的外层电子价电子脱离原子核束缚后而成为自由电子。铜的自由电子密度为85×1028米－3。各种金属的自由电子密度有相同的数量级。n型半导体中的多数载流子是自由电子。原子中的电子，脱离原子核的引力范围，而可在原子间自由运动，此种电子称为「自由电子」。自由电子的运动可引起电流。由于金属内部存在自由电子，因此为电的良导体。自由电子
随便看	first class flexible cord first class general agencies first class goods first-class goods first-class higher vocational college first class highrise building First class Highway first-class highway first-class honours degree first-class honours degrees first classification theorem First Class in College first-class institutions first class insulated wire first-class international financial centre first-class invention award first-class javelin athlete first-class journal first-class laboratories first class league matches first class lever first-class lever first-class mail first -class mail first-class mail/post/postage/stamps