It is constantly return to behind, focus on the past, the pursuit of a closed circle of stability and symmetry, is a constant return to the origin of the reversible process.
It is a closed ring that constantly returns to the back, focuses on the past, pursues stability and symmetry, and is a reversible process that is constantly returning to the origin.
It is a closed circle that constantly returns to the back, pays attention to the past, pursues stability and symmetry. It is a reversible process that constantly returns to the origin.<br>