threeling三连晶threenum.三n.三；三个adj.三个的three dimensions display立体显示three numeral code group三位数数码组three-way volume table三元材积表Three-way cross cattle三元杂交牛three-viewing graphics三维视图three-crystal lattices三晶体点阵法Three-order statistics三阶统计特性Three-phase extraction三相萃取three-dimension visual三维视景threedimensional polymer交联聚合物