threedoors三门冰箱threenum.三n.三；三个adj.三个的Three-dimensional fuzzy control三维模糊控制threephase shunt commutator motor三相并励换向电动机three-dimensional seismic input三维地震three principles of mass-energy真气Three-dimensional virtual scene三维虚拟场景Three-North shelterbelt project三北防护林工程three dimension evaluation system三维评价体系three requirements and heavy load三从一大three-share medium mounted plow悬挂中型三铧犁three-cnannel image distributor三通道影像分像器