Helicopter Direction Center Heavy Duty Cooling HYbrid Device Controller high dose chemotherapy HYDAC Harbor Defense Command Harbor Defense Commander Hard Disc Controller hard disk controller Hard-Disk Controller Hasselblad Data Camera high-dose chemotherapy Human diploid cell Hybrid Driver Controller Device Context Handle HADCO CORP. Haldia Dock Complex Half-Duplex Circuit hand drive control Hard Drive Crusher Harriman Dispatch Center HD Corea headcase Headquarters and Distribution Company Headquarters Data Center Health and Disability Commissioner Health Data Card Health Discovery Corp Heated Discharge Conveyor heavily damaged cells Heavy Duty Clamp Helcopteros De Cataluna Helicopter Defense Command Helicopter Director Center Helium Direct-Current Henry Draper Catalogue Hexadecimal-to-Decimal Conversion Hierarchical Distributed Control High Definition Camera High Dependability Computing
Helicopter Direction Center