threeleaf三叶
threenum.三n.三;三个adj.三个的
three - zone theory三区理论
three dollars a dozen每打三美元
three step controller三位调节器
three-tube telecine三管式电视电影机
three layers teaching三层次教学
three-points method三点法
three-phase machine三相电机
three types of vortex三旋运动
three-pin connector三针连接器
three point smoothing三点平滑