threenum.三n.三;三个adj.三个的
three- dimensional afforestation立体绿化
three-wheel delivery motor lorry三轮运货摩托车
three-use water source heat pump三用型水源热泵
three issues of agricultural areas“三农”问题
three-sample amino acid analyzer三试样氨基酸分析仪
three-dimensional uhrasonography三维超声
three-dimensional seismic method三维地震法勘探
three-stage least squares method三段最小平方法