three I三I算法threenum.三n.三；三个adj.三个的three treasure“三件宝”three services三军three-handedadj.装有三只手的；三人比赛的Three campuses三校区threefold gate阈门Three Concerns“三贴近”three abstract三大文摘three bearings三支座Three phase AC三相交流three layer PE三层PE

1. A group of three bits or three pulses, usually in sequence on one wire or simultaneously on three wires.
   三个二进制位或三个脉冲组成的一种组，通常按时间顺序出现在一根导线上或同时出现在三根导线上。