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DS-2000
DS-2000 is a geostationary satellite bus developed by Mitsubishi Electric as Japan's first standard satellite platform, derived from JAXA satellite buses and flown on missions like Himawari 8 and Michibiki since 2006.
DS-U2
DS-U2 (ДС-У2) is a non-orienting, solar-powered Soviet small satellite bus developed in the mid-1960s at OKB-586 in Dnepropetrovsk, first flown as Kosmos 93 in 1965.
DSA-110
DSA-110 (Deep Synoptic Array-110) is a Caltech radio interferometer of 110 dishes at Owens Valley, California, that detects fast radio bursts and localizes each to its host galaxy.
DSB (railway company)
DSB (Danske Statsbaner) is the Danish state-owned passenger railway company, founded in 1885. It operates long-distance and regional trains across Denmark, the Copenhagen S-train network, and international services to Germany.
DSB Class MZ
The DSB Class MZ is a class of 61 Co-Co diesel-electric locomotives built by NOHAB in Sweden for the Danish State Railways between 1967 and 1978.
DSCS III
DSCS III, or Defense Satellite Communications System III, is the third generation of US military geostationary communications satellites, providing secure, jam-resistant links from 1982 until replacement by WGS.
DShK
The DShK (ДШК), nicknamed Dushka, is a Soviet 12.7 mm heavy machine gun adopted in 1939, designed by Vasily Degtyaryov and Georgy Shpagin and still in use worldwide.
DSLAM
A DSLAM (digital subscriber line access multiplexer) is a network device at a telephone company's central office that terminates many DSL lines and aggregates their traffic onto a high-speed backbone.
DSM-Firmenich
DSM-Firmenich, or DSM-Firmenich AG, is a Swiss-Dutch creator and manufacturer of nutrition, health, and beauty ingredients, formed in 2023 through the merger of DSM and Firmenich.
dSPACE SCALEXIO
dSPACE SCALEXIO is a modular, scalable real-time simulation platform by dSPACE GmbH of Paderborn, Germany, introduced in 2011 for hardware-in-the-loop testing and rapid prototyping of electronic control units.
DSPy
DSPy is an open-source Python framework from Stanford NLP, introduced in October 2023, in which developers declare each language-model step and a compiler tunes the prompts automatically.
DStv
DStv (Digital Satellite Television) is a satellite pay-TV platform run by South Africa's MultiChoice. Launched in 1995, it serves 14.5 million subscribers across sub-Saharan Africa.
DT Midstream
DT Midstream is an American natural gas midstream company headquartered in Detroit, Michigan, spun off from DTE Energy in July 2021 and trading on the NYSE as DTM.
Dtac
Dtac, formally Total Access Communication Public Company Limited, was a Thai mobile network operator founded in 1989 that amalgamated with True Corporation on 1 March 2023.
DTE Electric
DTE Electric is an investor-owned electric utility serving roughly 2.3 million customers in southeastern Michigan, including Detroit and Ann Arbor, as a subsidiary of DTE Energy.
DTE Gas
DTE Gas, long known as Michigan Consolidated Gas Company (MichCon), is a regulated natural gas utility serving about 1.4 million customers across Michigan as the gas segment of DTE Energy.
DTEK Pavlogradugol
DTEK Pavlogradugol, also rendered DTEK Pavlohradvuhillia, is a Ukrainian coal-mining company based in Pavlohrad that mines the Western Donbas and is Ukraine's largest coal enterprise.
DTMF signaling
DTMF signaling, also known as dual-tone multifrequency signaling or Touch-Tone, represents each pressed telephone key as two simultaneous voice-band frequencies, one low and one high, and is used for dialing and IVR menus.
Dua FLNG Terminal
Dua FLNG Terminal is an operating LNG export terminal in Sabah, Malaysia, formed by PFLNG DUA, PETRONAS' second floating LNG unit and the world's first deepwater FLNG facility.
Dua Malaysia LNG Terminal
Dua Malaysia LNG Terminal, also known as MLNG Dua, is an onshore LNG export plant at Bintulu, Sarawak, Malaysia, with three liquefaction trains operating since 1995.
Dual active bridge converter
The dual active bridge converter is an isolated, bidirectional DC-DC converter in which the phase shift between two H-bridges controls power flow, introduced in 1988.
Dual branch network
A dual branch network is a neural network architecture with two parallel pathways whose outputs are combined by a fusion step, in Siamese or independent-branch form.
Dual carriageway
A dual carriageway is a road where traffic in the two directions is separated by a central reservation; in the United States it is called a divided highway.
Dual connectivity
Dual connectivity is a mobile-network technique in which a device connects through two base stations at once; its EN-DC form underpinned most early non-standalone 5G launches.
Dual cycle
The dual cycle, also called the limited pressure cycle or Sabathe cycle, is a thermodynamic cycle that combines the Otto and Diesel cycles by adding heat partly at constant volume and partly at constant pressure.
Dual decomposition
Dual decomposition is an optimization method that solves a large constrained problem by splitting it into subproblems coordinated through dual variables acting as prices, allowing parallel solution.
Dual deployment
Dual deployment, also called dual-event recovery, is a rocket recovery method that deploys a small drogue parachute at apogee and a full-size main parachute shortly before landing.
Dual gauge
Dual gauge, also called mixed gauge or twin gauge, is railway track carrying trains of two different wheel gauges, usually by laying three rails, used in Australia, Spain, and Switzerland.
Dual gradient drilling
Dual gradient drilling (DGD) is an offshore technique, part of managed pressure drilling, that maintains two pressure gradients so wellbore pressure matches formation limits better.
Dual in-line package
The dual in-line package (DIP) is an integrated circuit housing with two parallel rows of pins, introduced at Fairchild in 1965 and dominant for roughly two decades.