Can the attachment of the specification of utility model patent application be explained by the three-dimensional shape of cad? No, it's attached to the abstract of the instruction.

As long as the structure and components can be clearly displayed, but some 3D drawings in CAD are clear and transparent, once copied into WORD, it will be chaotic, and there will be overlapping of 3D components, which may need editing. Usually, you can copy them into visio before editing.