Past participle of "damp" used adjectivally.
The sensor is mounted on a damped platform to prevent resonance.
Датчик установлен на демпфированной платформе, чтобы предотвратить резонанс.
She applied a damped sponge to the stain.
Она приложила увлажнённую губку к пятну.
Used chiefly in technical contexts (physics, engineering) to denote something whose oscillations or vibrations have been reduced.