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Direct Exchange Line

См. также в других словарях:

  • Direct exchange geothermal heat pump — A direct exchange (DX) geothermal heat pump system is a geothermal heat pump system in which the refrigerant circulates through copper tubing placed in the ground. The refrigerant exchanges heat directly with the soil through the walls of the… …   Wikipedia

  • Exchange interaction — In physics, the exchange interaction is a quantum mechanical effect without classical analog which increases or decreases the expectation value of the energy or distance between two or more identical particles when their wave functions overlap.… …   Wikipedia

  • Direct inward dialing — (DID), also called direct dial in (DDI) in Europe and Oceania, is a feature offered by telephone companies for use with their customers private branch exchange (PBX) systems. In DID service the telephone company provides one or more trunk lines… …   Wikipedia

  • Direct market access — (DMA) is a term used in financial markets to describe electronic trading facilities that give investors wishing to trade in financial instruments a way to interact with the order book of an exchange. Normally, trading on the order book is… …   Wikipedia

  • Direct distance dialing — (DDD) or direct dial is a telecommunications term for a network provided service feature in which a call originator may, without operator assistance, call any other user outside the local calling area. DDD requires more digits in the number… …   Wikipedia

  • Direct Access Test Unit — Direct Access Test Units (DATUs) are special PSTN phone numbers that terminate at the central office switch in a telephone company s local exchange that provide switchmen and telco technicians with a circuit for testing lines in various ways.[1]… …   Wikipedia

  • Direct Inward Dialing — (DID), also called Direct Dial In (DDI) in Europe, is a feature offered by telephone companies for use with their customers PBX systems, whereby the telephone company (telco) allocates a range of numbers all connected to their customer s PBX. As… …   Wikipedia

  • Direct current — (red curve). The horizontal axis measures time; the vertical, current or voltage. Direct current (DC) is the unidirectional flow of electric charge. Direct current is produced by such sources as batteries, thermocouples, solar cells, and… …   Wikipedia

  • Direct-to-consumer advertising — (DTC advertising) usually refers to the marketing of pharmaceutical products but can apply in other areas as well. This form of advertising is directed toward patients, rather than healthcare professionals. The Food and Drug Administration holds… …   Wikipedia

  • Exchange-traded fund — An exchange traded fund (ETF) is an investment fund traded on stock exchanges, much like stocks.[1] An ETF holds assets such as stocks, commodities, or bonds, and trades close to its net asset value over the course of the trading day. Most ETFs… …   Wikipedia

  • Exchange Place (PATH station) — Infobox Station name=Exchange Place image size= image caption= address=Foot of Montgomery Street at Hudson River Jersey City, New Jersey line=PATH:rail color box|system=PATH|line=NWK WTCrail color box|system=PATH|line=HOB WTC other=Hudson Bergen… …   Wikipedia

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