three plyadj.三层的(三股的;三夹板)
threenum.三n.三;三个adj.三个的
three-flanged nail三刃钉,三叶钉
Three Gorges granite三峡花岗岩
three-phase system三相制,三相系
three-point method三点法
Three Gorges writing三峡书写
three-field system三区制
three-level scheme三层格式
three major controls三大控制
Three Gorges cascade三峡梯级
three-necked flask三颈烧瓶