threestepadj.三级的
threenum.三n.三;三个adj.三个的
three-in-one furnace“三合一”炉
three states of nitrogen三氮
Three Outlooks education“三观”教育
three-phase power flow三相潮流
three-dimensional test三维试验
three-terminal contact三端子接点
three- phase component三组分
three-body interaction三体作用
three coordinate measure三坐标测量
three-dimension coding三维编码