дублювальна гідравлічна система
back-up hydraulic system failure indicator
back-to-back circuit
back-to-back connection
back-to-back radio stations
back-to-back relay
self-contained hydraulic system
hydraulic-brake system
emergency hydraulic system
standby hydraulic system
hydraulic system hose
landing ramp hydraulic system charger
main hydraulic system
hydraulic system
vernier solo hydraulic power system
back-up system
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
hydraulic rammer
hydraulic retention time
valve hydraulic lifter
equilibrator hydraulic cylinder
hydraulic brake with vacuum power