英语释义
1. a unit that is part of a larger unit a subdivision of a unit
In the U.S. Army's case … the smallest subunit is the squad (nine to twelve individuals under a sergeant).
— Norman Friedman Because of a quirk in the replicative machinery, when a strand of DNA is duplicated during mitosis, a few subunits at one end are always lost.
— John Rennie
2. a unit that forms a discrete part of a more comprehensive unit
subunits of a protein