HPIR - What does HPIR stand for? The Free Dictionary
References in periodicals archive
After the fires smoldered and burned out the peat horizon, new ash horizons (Cpir) formed up to 5 cm deep; they formed over peat charry horizons (Hpir
, 2-3 cm) and pyrogenic muck peat horizons (Ha,pir, 2-3 cm).
Its activities include high probability of intercept receiver (HPIR
) programs, avionic interface systems and solid state ELM programs.