auto scan tuning switch
auto seek tuning switch
coupled (linked)switch,deck switch,gang switch
flat-tuning (=broad tuning)
Air Switch，Air-break Switch
switch on and switch off
switch point；point tongue；switch rail；tongue rail；blade
whippletree switch whiffletree switch
A1 and Mg alloy tuning fork
Active speed-tuning control
adaptive control and auto tuning
adjustable motor tuning
aerial tuning capacitor