Composite structure

A composite structure, comprising:

• a first structure layer comprising a plurality of first structure bodies spaced apart from each other;
• a second structure layer comprising a plurality of second structure bodies spaced apart from each other, the first structure bodies and the second structure bodies being staggered;
• wherein first connecting portions protruding toward the second structure layer are provided at predetermined positions on the first structure bodies where the first structure bodies are staggered relative to the second structure bodies, and second connecting portions protruding toward the first structure layer are provided at predetermined positions on the second structure bodies where the second structure bodies are staggered relative to the first structure bodies, and the first connecting portions and the second connection portions are staggered;
• a plurality of adjustment bodies connected in a layer direction between the first connecting portions and the second connecting portions that are staggered, wherein the plurality of adjustment bodies are used to combine the plurality of the first structure bodies and the plurality of the second structure bodies into an integrated structure;
• wherein the adjustment bodies are configured to adjust gap widths between adjacent first structure bodies and gap widths between adjacent second structure bodies according to expansion coefficients of the adjustment bodies, so as to adjust an expansion coefficient of the integrated structure.