спарені двигуни
main engines
coupled vibrations
loosely-coupled
twin
twin engine aircraft
twin-barrelled
twin-mount
twin detonating fuse
cam and twin lever
dual spacing of twin tires
twin-spool compressor
dual rotors / twin rotors
tandem-rotor helicopter (twin rotors mounted longitudinally)
twin electronic booster
twin rotors / dual rotors
twin temperature indicator