parent: n.1.父亲;母亲。2.〔pl.〕双亲;祖先。3.(动、植物的)母体,亲本。4.根源,本源。5.保护者。短语和例子one's parents 双亲。 parent-teacher association 【教育】家长会。 aparent bird 老鸟。 a parent company 母公司。 parent substance 亲体,母物。 a parent stem
Even in an insulator the electrons can move about without leaving their parent atoms or molecules . 甚至在绝缘体内,电子也能不离开它所属的原子或分子而运动。
2.
Conduction of electricity in solids consists of the drift of electrons that have been temporarily detached from the parent atoms 固体中电的传导是暂时离开母原子的电子的漂移所致。