direct-action
direct-arc
direct-axis
direct-band-gap
direct-challenge
direct-conversion
direct-coupled
direct-current
direct-detection
direct-dialing
  direct-digital
direct-display
directed
direct-feedback
direct-gap
direct-inductive
direct-insert
direction
directional
directional-current
directionality

    direct-digital control system

    система прямого цифрового управления