threeleaf三叶
threenum.三n.三;三个adj.三个的
three scoops of flour三杓子面粉
three-colour system三色系统
three leg transformer三腿铁芯变压器
three-phase exciter三相励磁机,三相激磁器
three primary colours三原色
three-level network三级网络
Three-knife trimmer三面切书机
Three-circle Theory三圈理
three line relaxation三线放松法
three o'clock welding