HAD
Hadamar
HADS
HADTS
hafnium
HAIM
HAL
half
half-adder
half-amplitude
  half-duplex
half-hard
half-height
half-life
half-line
half-octave
half-power
half-subtracter
half-tone
halftone
half-value

    half-duplex circuit

    полудуплексная линия