환경 및 무역 관련용어 모음집 environmental and trade terms : 17301-17400

환경 및 무역 관련용어 모음집 environmental and trade terms : 17301-17400

번호                  용어                  해설

17301    ◆         DROPLET           ◆         수포; 고요한 상태에서는 낙하와 와류가 있는 상태에서는 부유하는 미세하고 밀도가 작은 액체입자

17302    ◆         Drop-off ◆         Recyclable materials collection method in which individuals bring them to a dessignated collection site.

17303    ◆         DROP-OFF CENTER         ◆         재활용품 수집센타 : 재활용센타 recycling center 와 유사한 의미로 쓰인다.

17304    ◆         dropout error     ◆         an error that occurs in recorded magnetic tape due to foreign particles in the magnetic coating or defects in the backing.

17305    ◆         dropout or drop out       ◆         a momentary loss of signal in any system, causing a noticeable reduction of audio or video response.  Computer Technology. the disappearance of a character from a display screen, or from a file or printout, due to one or more bits being misread or misrecorded on a tape or disk.  Graphic Arts. a halftone from which some of the dots have been removed, either by retouching the negative or by etching the printing plate, in order to make certain areas (usually the background) print as completely white. Also, HIGHLIGHT HALFTONE.

17306    ◆         dropping point   ◆         the temperature at which a grease liquefies under standardized conditions.

17307    ◆         dropping-mercury electrode         ◆            a device that produces mercury droplets at a constant rate, allowing electrochemical analysis to be done on a fresh mercury surface with each new drop.

17308    ◆         DROUGHT         ◆         한발 : 강수량이 정상기록치에 상당히 미달하여 토지자원 생산체계에 부정적인 영향을 미치는 심각한 수자원 부족의 자연현상

17309    ◆         DRR      ◆         Data Review Record

17310    ◆         drum     ◆         a vessel in which heated products are charged to allow volatile portions to separate.

17311    ◆         DRUM (ROTARY) SCREENS           ◆            드럼식 회전 스크린; 수처리에 사용되는 스크린

17312    ◆         drum brake        ◆         a brake system in which a pair of brake shoes are pressed against the inner surface of a shallow metal drum rigidly attached to a wheel.

17313    ◆         drum feeder       ◆         a rotating drum designed to distribute parts for assembly into different chute arrangements. Also, ROLL FEEDER, TUMBLER FEEDER.

17314    ◆         drum filter         ◆         a rotating cylindrical drum that is equipped with a vacuum pump and used to filter ore pulp. Also, ROTARY VACUUM FILTER.

17315    ◆         drum recorder    ◆         a facsimile recorder consisting of a motor-driven rotating cylinder that contains the paper on which the image is to be reproduced.

17316    ◆         drum transmitter ◆         a facsimile transmitter in which the copy is mounted on a rotating cylinder.

17317    ◆         dry abrasive cutting        ◆         the process of cutting a material using a rotary abrasive wheel without a liquid coolant.

17318    ◆         DRY ADIABATIC LAPSE RATE         ◆            건조단열감률

17319    ◆         dry bed ◆         a vessel filled with solid absorption materials, used to purify or recover liquid from a gas stream.

17320    ◆         dry coloring       ◆         a process of plastics coloring by tumbling uncolored particles of plastic material with pigments and dyes.

17321    ◆         dry cooling        ◆         any system for cooling water in which the water is circulated through pipes that contact the cooling element, but is not directly exposed to the coolant or air.

17322    ◆         DRY DEPOSITION            ◆         건조침적; 어로졸형태로 직접 침착하는 것

17323    ◆         dry flashover voltage       ◆         the minimum voltage across a clean, dry insulating material at which flashover of the surrounding air occurs.

17324    ◆         dry friction         ◆         the resistance to motion of a nonlubricated system of solid bodies.

17325    ◆         dry hole ◆         a drill hole that has been abandoned due to a lack of production of marketable petroleum materials.

17326    ◆         dry limestone process     ◆         a method to control air pollution by exposing sulfur oxides in flue gases or the like to limestone, which changes them to disposable residues.

17327    ◆         dry pipe ◆         a pipe that prevents moisture from entering a steam outlet; it is positioned about the normal liquid level in the steam space of a boiler.

17328    ◆         dry point or dry point     ◆         the temperature at which the complete evaporation of a liquid occurs.  Graphic Arts. a method of plate engraving using a hard needle instead of an acid-etching solution.

17329    ◆         dry sleeve          ◆         a cylinder liner that is not in contact with a refrigerant or coolant.

17330    ◆         dry spot ◆         ㆍ an open area on laminated plastic where the surface film is incomplete.an open area on laminated plastic where the surface film is incomplete. ㆍ a portion of laminated glass in which there is no bonding of the plastic interlayer and surrounding glass layers.a portion of laminated glass in which there is no bonding of the plastic interlayer and surrounding glass layers.

17331    ◆         DRY WEATHER FLOW      ◆         건기유량;

17332    ◆         dry-box process  ◆         a method of removing hydrogen sulfide from industrial gases by passing the gases through boxes holding trays of wood shavings or other material coated with iron oxide.

17333    ◆         dry-chemical fire extinguisher       ◆            a type of chemical fire extinguisher filled with a dry powder, consisting mainly of sodium or potassium bicarbonate; used mostly for extinguishing small electrical fires.

17334    ◆         dry-desiccant dehydration            ◆            a technique to remove liquids from gases by using silica gel or another solid absorbent.

17335    ◆         Drying   ◆         건조; 수처리시설에서 나오는 슬러지 처리를 위한 공정

17336    ◆         dry-pit pump     ◆         a pump that operates by using liquid conducted to and from the unit through the pipe.

17337    ◆         dry-steam drum  ◆         a pressurized chamber that allows steam to flow from a boiler drum.

17338    ◆         DS        ◆         Dichotomous Sampler

17339    ◆         DSAP    ◆         Data Self Auditing Program

17340    ◆         DSCF     ◆         Dry Standard Cubic Feet

17341    ◆         DSCM   ◆         Dry Standard Cubic Meter

17342    ◆         DSS      ◆         Decision Support System; Domestic Sewage Study

17343    ◆         DT        ◆         Detectors (radon) damaged or lost; Detention Time

17344    ◆         DU        ◆         Decision Unit. Ducks Unlimited; Dobson Unit

17345    ◆         DUAL ALKALI      ◆         이중 염기법 : 습식폐기공정의 유형

17346    ◆         Dual injector for small pipe          ◆            소구경관용 이중주입기; 염소용액을 주입하는데 사용되는 분산기 종류

17347    ◆         dual in-line package        ◆         a standard form of housing for integrated circuits consisting of a rectangular body with two rows of terminal pins bent at right angles to the body and uniformly spaced for insertion in connectors or mating holes in printed circuit boards.

17348    ◆         dual radioactive decay     ◆         the characteristics of a nucleus that has two or more separate and alternative decay methods.

17349    ◆         DUAL WATER SYSTEM     ◆         중수도

17350    ◆         Dualayer distillate process            ◆            a process used to remove mercaptan and oxygenated compounds from fuel oil, using concentrated caustic Dualayer solution and electrical precipitation of the impurities.

17351    ◆         Dualayer solution            ◆         a concentrated solution of potassium or sodium hydroxide that contains a solubilizer.

17352    ◆         dual-bed humidifier        ◆         an air humidifier system that contains two adsorber beds in parallel, thus facilitating a continuous flow of air.

17353    ◆         dual-emitter transistor     ◆         a special transistor with two emitters; generally used in chopper circuits for the amplification of DC or very low-frequency AC signals.

17354    ◆         dual-fuel engine ◆         an internal combustion engine that is adapted to run on either gasoline or natural gas.

17355    ◆         dual-gravity valve            ◆         a valve that is float-operated and functions on the interface between two immiscible liquids of different specific gravities.

17356    ◆         duality principle  ◆         the principle that every circuit has a dual and analogous counterpart containing dual (and sometimes complementary) parameters; used in the analysis and design of electrical circuits.  Quantum Mechanics.

17357    ◆         Dual-medium and multimedium stratified filter bed           ◆         2층 및 다층여재 비층형성화 여과상; 층형성여부에 따른 여과상의 종류

17358    ◆         Dual-Phase Extraction      ◆         Active withdrawal of both liquid and gas phases from a well usually involving the use of a vacuum pump.

17359    ◆         dual-trace amplifier         ◆         a two-channel amplifier unit in which each channel is independently adjustable; used for amplifying the signal voltages that are to appear as vertical deflections on the associated timebase, in a dual-trace oscilloscope.

17360    ◆         dual-trace oscilloscope    ◆         an oscilloscope capable of displaying two separate and independently adjustable timebase sweeps.

17361    ◆         DUC      ◆         Decision Unit Coordinator

17362    ◆         DUCKWEED        ◆         개구리밥

17363    ◆         duct      ◆         a metal tube or casing through which air is passed to ventilate, heat, or cool a machine or part.

17364    ◆         duct effect         ◆         a duct created by temperature inversions in the atmosphere through which radio waves appear to travel. Also, ducting effect.

17365    ◆         ducting  ◆         an atmospheric phenomenon in which microwave signals travel more than ten times farther than the line-of-sight limit and are refracted and retransmitted by an atmospheric duct.

17366    ◆         Duhring's rule    ◆         a rule for estimating vapor pressure, which states that a straight line can be drawn between the temperature at which one liquid exerts a certain pressure and the temperature at which a chemically similar liquid exerts the same pressure.

17367    ◆         Dukler theory     ◆         a theory giving the relationship of velocity and temperature distribution in thin films on vertical walls; used to compute effective thermal conductivity and eddy viscosity near the solid boundary.

17368    ◆         dull emitter        ◆         the cathode of an electron tube that has been coated with a special material that increases the electron-emitting capability allowing the cathode to operate at lower temperatures than otherwise possible.

17369    ◆         Dumas method   ◆         ㆍ a test for the presence of nitrogen in organic compounds, by heating the substance with copper oxide to convert the nitrogen to nitrogen oxides, reducing the oxides, and measuring the volume of nitrogen.a test for the presence of nitrogen in organic compounds, by heating the substance with copper oxide to convert the nitrogen to nitrogen oxides, reducing the oxides, and measuring the volume of nitrogen. ㆍ a method to determine the vapor density of a volatile liquid.a method to determine the vapor density of a volatile liquid.

17370    ◆         dumbwaiter        ◆         a small electric or hand-operated elevator designed for quickly transporting loads between floors; used, for example, to move equipment in a construction project.

17371    ◆         dummy antenna ◆         a resistive device that simulates the electrical characteristics of a transmitting or receiving antenna but is incapable of receiving or radiating radio-frequency energy; used chiefly for testing transmitters. Also, ARTIFICIAL ANTENNA.

17372    ◆         DUMMY DITCH   ◆         맹암거; 지하배수를 위해 땅속에 묻은 잡석 등으로 된 암거

17373    ◆         dummy load      ◆         a power-dissipating device used at the end of a transmission line or waveguide to convert transmitted energy into heat so that no energy is radiated outward or reflected back to its source. Also, ARTIFICIAL LOAD.

17374    ◆         DUMMY RESISTOR          ◆         가설저항

17375    ◆         Dump:   ◆         A site used to dispose of solid waste without environmental controls.

17376    ◆         dumpcar            ◆         a dumpcart that is fitted to run on a narrow-gauge railway; used especially in mining.

17377    ◆         dumpcart           ◆         a cart having either a bottom that opens downward or a body that tilts so that its contents can be discharged without handling.

17378    ◆         DUMPING          ◆         덤핑; 정상적인 가격이하로 수출되는 행위

17379    ◆         Dumpster          ◆         a trade name for a large metal refuse bin designed to be left and filled at a remote site, then picked up and hauled away by a specially equipped truck.

17380    ◆         DUNE BEDS       ◆         사구 하상

17381    ◆         DUNKEL TEXT     ◆         덴켈초안 : dunkel 전GATT 사무총장이 91년 12월 UR협상이 교착상태를 타개하기 위해 제시한 최종협정문초안

17382    ◆         duodiode           ◆         an electron tube in which two diodes are contained within the same envelope. Also, DUAL DIODE, DOUBLE DIODE.

17383    ◆         duodiode-pentode          ◆         an electron tube in which two diodes and a pentode are contained within the same envelope.

17384    ◆         duodiode-triode  ◆         an electron tube in which two diodes and a triode are contained within the same envelope.

17385    ◆         duoplasmatron   ◆         a gas-filled electron tube that generates ion beams for use in mass spectrometer applications.

17386    ◆         duotriode          ◆         an electron tube in which two triodes are contained within the same glass envelope. Also, DOUBLE TRIODE, DUAL TRIODE.

17387    ◆         duplex compressor          ◆         an apparatus consisting of two types of compressors, such as a simple steam and a simple air cylinder, set side by side and working in combination.

17388    ◆         duplex pump      ◆         a positive-displacement pump in which two liquid cylinders are set side by side and geared so that their piston strokes alternate, thus producing continuous action; used especially to move a low volume of liquid at high pressure.

17389    ◆         duplex tube       ◆         an electron tube in which two electron tubes are contained within the same envelope.

17390    ◆         Duplicate           ◆         A second aliquot or sample that is treated the same as the original sample in order determine the precision of the analytical method. (See: aliquot.)

17391    ◆         duration control ◆         a potentiometer control used to adjust the duration of the reduced gain time in a sensitivity time-control circuit.

17392    ◆         DURATION OF SUNSHINE            ◆            일조시간 : 햇빛이 실제로 지표를 비추는 시간길이

17393    ◆         During beds       ◆         건조상 탈수법; 슬러지 탈수방법

17394    ◆         DUST COLLECTOR           ◆         집진기

17395    ◆         DUST DOME EFFECT        ◆         먼지지붕효과(대)

17396    ◆         DUST FALL         ◆         강하분진; 먼지의 입경이 크기 때문에 공기중에 떠 있지 못하고 가라앉은 분진

17397    ◆         DUST STORMS   ◆         먼지폭풍

17398    ◆         dust-devil effect  ◆         an abrupt and short-lived change in the vertical component of an atmospheric electric field, caused by the passage of a dust devil that is near an instrument sensitive to the vertical gradient.

17399    ◆         Dustfall Jar         ◆         An open container used to collect large particles from the air for measurement and analysis.

17400    ◆         Dutch process    ◆         a procedure for creating white lead, in which metallic lead in containers corrodes due to the action of acetic acid and carbon dioxide, which are produced by the fermenting tanbark and manure into which the containers have been placed.