вертикальна масляна канавка
instantaneous vertical speed indicator / instantaneous vertical-speed indicator (IVSI)
slot-type groove
spiral parallel groove
barrel groove
breechblock-stop groove
cam groove
circular groove (of ammunition)
crimping groove
dismounting groove
extraction groove
extractor groove
finger groove
four-groove barrel
groove for coupling
groove
engine oil reservoir / engine oil tank
oil gauge / oil-gauge
high vertical inclination angle
vertical
vertical / short takeoff and landing (V/STOL)
vertical aerial photography
vertical angle
vertical axis
vertical blip
vertical datum plane
vertical distance
vertical envelopment
vertical gyro indicator
vertical photograph
vertical plane
vertical position
vertical replenishment (VERTREP)