HHDD: Heavy Heavy Duty Engine Under Diesel Test Procedure
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Others
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What is the full form of HHDD?
HHDD stands for Heavy Heavy Duty Engine Under Diesel Test Procedure. Fullformexpand.com has 2 other full forms for abbreviation HHDD.
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"HHDD." Fullformexpand.com, https://www.fullformexpand.com/hhdd/847022. Accessed 20 Nov. 2025.
Fullformexpand.com, 2025. "HHDD." Accessed November 20, 2025. https://www.fullformexpand.com/hhdd/847022.
"HHDD." (n.d.). Fullformexpand.com. Retrieved November 20, 2025, from https://www.fullformexpand.com/hhdd/847022.
HHDD. (2025). Fullformexpand.com. Available at: https://www.fullformexpand.com/hhdd/847022 (Accessed: 20 November 2025).
Found 2 other full forms for HHDD →
| Term | Full Form | Category |
|---|---|---|
| HHDD | Hybrid Hard Disk Drive
| Others |
| HHDD | Hybrid Hard Disk Drives
| Others |
View All Abbreviations →
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