【物理】调节（稳定）【物理】调节（稳定化）

down-regulating；down-regulation

self-regulating

feedback arrangement, internal with particular characteristic in regulating systems

pressure regulating valve

alternating current/voltage regulation using transformer regulating in quadrature

self-regulating arc welding transformer【电】

anti-hunting arrangements in regulating systems

speed governor (speed regulator, speed-regulating device)