Three As三个自动化
threenum.三n.三;三个adj.三个的
three-way tube[化] 三通管
three-division三雏
three-way type三通道型
three-quartersn.四分之三
threephase motor三相电动机
three-went way三岔路口
three side views三视图
three-D design三维设计
three-way lamp三向灯
three-way cock三通活栓,三通开关,三通旋塞