Custody transfer is the transfer of custody between two custody accounts opened by same investor, or transferbond on hand from one custody account to another under the same investor.
Electrovalence: valence characterized by the transfer of electrons from atoms of one element to atoms of another during the formation of an ionic bond between the atoms.
电价：在原子间形成离子键的过程中，由电子从一种元素的原子转移到另一种元素的原子所表示的价。
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An ionic bond is characterized by the transfer of an electron from one atom to the other.