In summary, The concave-convex structure is a most basic original technological innovation.
In summary, The concave-convex structure is a most basic original technological innovation.
综上所述，凹凸结构是一项最基础的自主原始创新技术。
In summary, The concave-convex structure is a most basic original technological innovation.
综上所述，凹凸结构是一项最基础的自主原始创新技术。