短語詞組短語obtuse crossing angle 鈍角轍叉角obtuse spherical angle 鈍球麪角obtuse -angle blade detail 鈍角葉片obtuse e angle 鈍角Obtuse -angle grain 鈍角顆粒obtuse polyhedral angle 鈍多麪角obtuse dihedral angle 鈍二麪角 返回 obtuse angle