短語詞組短語double ruled warped surface 雙直線翹曲面double ruled warp surface 雙直紋翹曲面ruled envelope surface 直紋包絡面Ruled d Surface 規(guī)則曲面Ruled Lofted Surface 直紋Ruled Paraboloid Surface 直紋拋物面ruled -surface 直紋面skew ruled surface 不可展直紋面 返回 ruled surface