サンドイッチ構こう造ぞう

noun

sandwich structure

Technical term for a layered construction with a core between two outer layers, used in engineering, materials science, and sometimes metaphorically.

• このパネルはサンドイッチ構こう造ぞうで、軽かるくて強つよい。

  This panel has a sandwich structure, making it light and strong.