Full form of HHDD is Heavy Heavy Duty Engine Under Diesel Test Procedure

Q: 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 of HHDD abbreviation.

Category: Others

Language: English

Frequently Asked Questions

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 of HHDD abbreviation.

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"HHDD." Fullformexpand.com, https://www.fullformexpand.com/hhdd/heavy-heavy-duty-engine-under-diesel-test-procedure. Accessed 26 Feb. 2026.

Fullformexpand.com, 2026. "HHDD." Accessed February 26, 2026. https://www.fullformexpand.com/hhdd/heavy-heavy-duty-engine-under-diesel-test-procedure.

"HHDD." (n.d.). Fullformexpand.com. Retrieved February 26, 2026, from https://www.fullformexpand.com/hhdd/heavy-heavy-duty-engine-under-diesel-test-procedure.

HHDD. (2026). Fullformexpand.com. Available at: https://www.fullformexpand.com/hhdd/heavy-heavy-duty-engine-under-diesel-test-procedure (Accessed: 26 February 2026).

Found 2 other full forms of HHDD →

Abbreviation	Full Form	Category
HHDD	Hybrid Hard Disk Drive	Others
HHDD	Hybrid Hard Disk Drives	Others

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