8-speed automatic gearbox

change-speed gearbox

semi-automatic pistol (automatic pistol)

automatic heavy barrel rifle / heavy barrel automatic rifle

supersonic speed (exceeds speed of sound / Mach 1)

variable-speed with speed control

instantaneous vertical speed indicator / instantaneous vertical-speed indicator (IVSI)

Nr gauge (Nr = speed of rotation) / rotor speed sensor

Motor PWM speed separated from PID speed

gearbox / gear box

crash-type gearbox

epicyclic gearbox

input gearbox shaft

angular gearbox

antitorque gearbox

central gearbox

propeller gearbox

accessory drive gearbox

tail gearbox

gearbox adapter

gearbox compartment (of a tank)

gearbox dipstick

gearbox main drive shaft

gearbox oil filler

accessory gearbox

gearbox

automatic aircraft gun

automatic chemical agent alarm

automatic combat direction system

automatic data processing (ADP)

automatic data processing equipment

automatic fire

automatic firearm