House Targaryen is a former Great House of Westeros and was the ruling royal House of the Seven Kingdoms for three centuries, before it was deposed during Robert's Rebellion and House Baratheon replaced it as the new royal House. The few surviving Targaryens fled into exile.
PCD Explained. PCD stands for Pitch Circle Diameter. Also Known as Bolt Circle Diameter (BCD). The Bolt Circle Diameter (BCD) (or Pitch Circle Diameter - PCD) is the diameter of the circle that passes by the center of the bolts. This is very easily measured on wheels with even number of bolts by measuring the distance between the center of two opposite bolts in mm.
SACD. SACD (Super Audio Compact Disc) is a high resolution audio disc format developed by Sony and Philips (who also developed the CD). Utilizing the Direct Stream Digital (DSD) file format, SACD provides for more accurate sound reproduction than the Pulse Code Modulation (PCM) used in the current CD format.