Dual gauge — Track gauge by size Broad gauge Sta … Wikipedia
Dual (grammatical number) — Dual (abbreviated du) is a grammatical number that some languages use in addition to singular and plural. When a noun or pronoun appears in dual form, it is interpreted as referring to precisely two of the entities (objects or persons) identified … Wikipedia
Dual energy X-ray absorptiometry — (DXA, previously DEXA) is a means of measuring bone mineral density (BMD). Two X ray beams with differing energy levels are aimed at the patient s bones. When soft tissue absorption is subtracted out, the BMD can be determined from the absorption … Wikipedia
Dual inheritance theory — (DIT), also known as gene culture coevolution, was developed in the late 1970s and early 1980s to explain how human behavior is a product of two different and interacting evolutionary processes: genetic evolution and cultural evolution. DIT is a… … Wikipedia
Dual-Cell HSDPA — (also known as: Dual Carrier HSPA or Dual Cell HSPA) is a wireless broadband standard based on HSPA that is defined in 3GPP UMTS release 8. Dual Cell (DC )HSDPA is the natural evolution of HSPA by means of carrier aggregation in the downlink[1].… … Wikipedia
Dual-purpose — is a noun and an adjective referring to things serving two purposes. It can specifically refer to: dual purpose gun, naval artillery mounting designed to engage both surface and air targets dual purpose improved conventional munition dual purpose … Wikipedia
Dual carriageway — A typical British dual carriageway with central barrier on the A63(T) near Hull, England … Wikipedia
Dual clutch transmission — Transmission types Manual Sequential manual Non synchronous Preselector Automatic Manumatic Semi automatic Electrohydraulic … Wikipedia
Standard RAID levels — The standard RAID levels are a basic set of RAID configurations and employ striping, mirroring, or parity.The standard RAID levels can be nested for other benefits ( see Nested RAID levels ). Concatenation (SPAN) The controller treats each drive… … Wikipedia
Standard gauge — For Standard Gauge in toy trains, see Standard Gauge (Toy Trains). Track gauge by size … Wikipedia