developable tangent surface[数] 可展切线曲面

non developable ruled surface非可展直纹曲面

developable normal surface可展法线曲面

development of developable curved surface可展曲面展开图

non-developable ruled surface[数] 非可展直纹曲面

non-developable curved surface development不可展曲面展开图

isotropic developable surface迷向可展曲面

non-developable surface不可展曲面

algebraic c developable surface代数可展曲面