three plyadj.三层的(三股的;三夹板)
threenum.三n.三;三个adj.三个的
Three Gorges culture三峡文化
three-fluted drill三槽钻头
three-eighths rule八分之三法则
three-lipped drill三缘钻头
three phase diagrams三相图
three-wire leveler三丝水准测量
three-body problem三体问题
three points hanging三点吊挂
three-state enable三态使能,三态启动
three-quarter shot双人近景