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What does DD stand for?

DD stands for Direct Drive (vinyl record player drive system as opposed to belt drive)

This definition appears very frequently and is found in the following Acronym Finder categories:

  • Science, medicine, engineering, etc.

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We have 113 other meanings of DD in our Acronym Attic

Samples in periodicals archive:

com)-- Wind Turbine Gearbox and Direct Drive Systems Global Market Size, Company Share, Gearbox Refurbishments and Key Country Analysis to 2020 Summary Wind Turbine Gearbox and Direct Drive Systems Global Market Size, Company Share, Gearbox Refurbishments and Key Country Analysis to 2020 is the latest report from industry analysis specialists GlobalData that offers comprehensive information and understanding of the wind turbine gearbox industry.
At a typical operating condition of 100 rpm--the base speed of all of the motors used in the experiment--the DC system consumed 10% more power than the AC, and the direct drive consumed 10% to 15% less than the AC The direct-drive system also was much quieter than the conventional systems--up to 70 times quieter than the AC at 100 rpm.
[ILLUSTRATION OMITTED] PSX: DIRECT DRIVE NITRILE from Press-Seal Gasket offers hydrocarbon resistance for applications where there are known or suspected contaminated soils or effluent streams, such as landfill sites, petroleum, storage, processing or refining areas, and other commonly contaminated areas.
Oneida Air Systems offers its new 10-hp Direct Drive dust collector, which the company says has a compact footprint and high static pressure capability.