three plyadj.三层的(三股的;三夹板)
threenum.三n.三;三个adj.三个的
three-through pump三联泵
three big components三大构成
three-index symbol三索引符号,三下标符号
three tins of coffee三听咖啡
three-leg inverter三桥臂逆变器
three -tank system三容水箱
three-view drawing三面图
three-axle trailer三轴挂车
three-color theory三原色论
three-hole element三孔元件