free electron
英
美
- electron n.电子
- free adj.自由的；免费的；畅通的；没有…的；未使用的；空闲的；随意的v.释放；使自由；使摆脱；解除；使可用于(某目的)adv.免费地；自由地
Noun:
-
electron that is not attached to an atom or ion or molecule but is free to move under the influence of an electric field
- Also present in solids are numbers of free electrons.
固体中也存在大量的自由电子。
- Here, free electrons rub off the con ductor and create a charge imbalance that causes the current flow.
这时，摩擦引起自由电子脱离导体，产生电荷不平衡，从而产生电流。
