main hydraulic system

main-rotor (hydraulic) collective pitch actuator

main defense area (line) / main defensive position

main tank/ main fuel tank

main gear box / main rotor transmission

main rotor transmission / main gear box

main-rotor head / main-rotor hub

main-rotor hub / main-rotor head

self-contained hydraulic system

hydraulic-brake system

emergency hydraulic system

standby hydraulic system

back-up hydraulic system

back-up hydraulic system failure indicator

hydraulic system hose

landing ramp hydraulic system charger

hydraulic system

vernier solo hydraulic power system

main metering carburetor system

combat vehicle main armament system

Main Ground Combat System (MGCS)

crushing by hydraulic press

directional-control hydraulic valve

hydraulic and insulating oils

hydraulic lock

hydraulic oil

hydraulic power

hydraulic power unit

hydraulic propulsion unit

hydraulic recoil mechanism

hydraulic servos

hydraulic shears cutting

hydrostatic-type hydraulic transmission