noun
substructure; underlying structure
Refers to the lower or supporting part of a physical structure, or the foundational framework of a system or theory.
橋の下部構造は鉄筋コンクリートでできている。
The bridge's substructure is made of reinforced concrete.
マルクス主義では、経
In Marxism, the economy is considered to form the substructure of society.