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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85×1028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
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To form a compound
to form a correct sentence
To forma furrow
To forma furrow,for example with a plow
To forma furrow, for examplewith a plow
To form again
To form a glaze
To form a head
To form a head,as lettuce or cabbage
To form a head, as lettuce or cabbage
To form a hypothesis
to form a judgment
to formalize an agreement
To form a loop
To form a mental image
To form an arc
To form a nucleus
To form an ulcer
to form an unviable opinion
to form a quorum
To form,associate in,or act as a clique
To form, associate in, or act as a clique
to format a currency field
To format a disk partition
to form a united front
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更新时间：2024/9/21 23:35:00