adjustable rocker counterbalancing
1регулируемое роторное уравновешивание станка-качалки — — [http://slovarionline.ru/anglo russkiy slovar neftegazovoy promyishlennosti/] Тематики нефтегазовая промышленность EN adjustable rocker counterbalancing …
2Whammy bar — A whammy bar, tremolo arm/bar, or vibrato arm/bar is a component of a guitar, used to add vibrato to the sound by changing the tension of the strings, typically at the bridge or tailpiece. The whammy bar enables the player to quickly vary the… …