The statement only involves the first two items, and there is no written statement on the design, but pictures or photos are needed.
Patent claim is a kind of legal document, which clearly and briefly stipulates the scope of patent protection;
Without illustrations, it doesn't mean that shapes can't be described, as long as shapes are involved in the technical scheme, it is definitely possible.
The claim of product category shall describe the shape, structure, interrelation and function of the parts.
Therefore, cross, triangle, frustum of a cone, T-groove, wavy line and other text descriptions can appear.
However, the technical effect produced by using this shape must be clearly stated in the specification. Otherwise, if only the change of appearance becomes an application for a patent for appearance, and design pictures or photos need to be provided, the protected object will change.
Besides, there is something wrong with your format. it should be
1, a kind of equipment, characterized in that the host is a ..
2. The device according to claim 1, characterized in that A is engraved with a cross pattern.
The word mode is too dangerous. If it is a plane pattern, it has no substantial technical effect and can easily become an appearance.
I don't know what your technical scheme is, what the cross pattern means, and the lettering is not clear. If it is intaglio, it can be changed to: A has cross holes or cross grooves.
If it is a relief, it can be changed to: A has a cross-shaped protrusion.