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单词 scanner
释义

scanner


scan·ner

S0121250 (skăn′ər)n.1. One that scans: a scanner of newspapers.2. A receiver that continuously broadcasts signals it detects from specified radio frequencies: heard about the robbery over the police scanner.3. An optical scanner.4. A device, such as a CT scanner or PET scanner, for observing internal organs, tissues, and other parts of the body.

scanner

(ˈskænə) n1. a person or thing that scans2. (Electronics) a device, usually electronic, used to measure or sample the distribution of some quantity or condition in a particular system, region, or area3. (Telecommunications) an aerial or similar device designed to transmit or receive signals, esp radar signals, inside a given solid angle of space, thus allowing a particular region to be scanned4. (Medicine) any of various devices used in medical diagnosis to obtain an image of an internal organ or part. See CAT scanner, nuclear magnetic resonance scanner, ultrasound scanner5. informal a television outside broadcast vehicle6. (Computer Science) short for optical scanner7. (Printing, Lithography & Bookbinding) printing an electronic device which scans printed material and converts it to digital form

scan•ner

(ˈskæn ər)

n. 1. a person or thing that scans. 2. optical scanner. See under optical scanning. 3. a radio receiver that continuously tunes to preselected frequencies, broadcasting any signal that it detects. 4. a device for examining a body, organ, or tissue. Compare CAT scanner, PET scanner, sonogram. [1550–60]

scanner

An input device collecting data by recording brightness values for small areas as it moves across a surface.
Thesaurus
Noun1.scanner - someone who scans verse to determine the number and prosodic value of the syllablesreviewer, referee, reader - someone who reads manuscripts and judges their suitability for publication
2.scanner - an electronic device that generates a digital representation of an image for data input to a computerscanner - an electronic device that generates a digital representation of an image for data input to a computerdigital scanner, image scannerdata input device, input device - a device that can be used to insert data into a computer or other computational deviceelectronic device - a device that accomplishes its purpose electronically
3.scanner - a radar dish that rotates or oscillates in order to scan a broad areadish aerial, dish antenna, saucer, dish - directional antenna consisting of a parabolic reflector for microwave or radio frequency radiation
4.scanner - a radio receiver that moves automatically across some selected range of frequencies looking for some signal or condition; "they used scanners to monitor police radio channels"electronic scannerdetector - electronic equipment that detects the presence of radio signals or radioactivity
Translations
扫描器

scan

(skӕn) past tense, past participle scanned verb1. to examine carefully. He scanned the horizon for any sign of a ship. 仔細觀看 细看2. to look at quickly but not in detail. She scanned the newspaper for news of the murder. 瀏覽 浏览3. to pass radar beams etc over. The area was scanned for signs of enemy aircraft. (用雷達等)掃視 扫描4. to pass an electronic or laser beam over a text or picture in order to store it in the memory of a computer. 掃瞄(圖文等以儲存在電腦內) 扫描5. to examine and get an image of what is inside a person's body or an object by using ultra-sound and x-ray. They scanned his luggage at the airport to see if he was carrying drugs. 用超音波和X光檢查身體內部或某物 通过激光或X光对身体进行扫描6. to fit into a particular rhythm or metre. The second line of that verse doesn't scan properly. 符合格律 (诗歌)符合韵律 nounShe had an ultrasound scan to see whether the baby was a boy or a girl; a brain scan; a quick scan through the report. 掃瞄 扫描ˈscanner noun a machine etc that scans. Scanners are machines that show the contents of your luggage on a scereen; an ultrasound scanner; an optical scanner. 掃瞄器 扫描器

scanner

扫描器zhCN

scanner


scanner

1. a device, usually electronic, used to measure or sample the distribution of some quantity or condition in a particular system, region, or area 2. any of various devices used in medical diagnosis to obtain an image of an internal organ or part 3. short for optical scanner

scanner

[′skan·ər] (computer science) A device that converts an image of something outside a computer, such as text, a drawing, or a photograph, into a digital image that it sends into the computer for display or further processing. (communications) That part of a facsimile transmitter which systematically translates the densities of the elemental areas of the subject copy into corresponding electric signals. (engineering) Any device that examines an area or region point by point in a continuous systematic manner, repeatedly sweeping across until the entire area or region is covered; for example, a flying-spot scanner. A device that automatically samples, measures, or checks a number of quantities or conditions in sequence, as in process control.

scanner

(1)An input device that takes in an optical image anddigitises it into an electronic image represented as binarydata. This can be used to create a computerised version of aphoto or illustration.

A scanner may be linked to optical character recognitionsoftware allowing printed documents to be converted toelectronic text without having to type them in at a keyboard.

scanner

(2)lexical analyser.

scanner

(1) A synonym for antivirus program.

(2) A smartphone application that reads barcodes. See mobile tagging.

(3) An optical device that reads a printed page or transparency and converts it into a graphics image for the computer. The scanner does not recognize or differentiate in any manner the content of the material it is scanning. Everything is converted into a bitmapped image, which is a pattern of dots. See bitmapped graphics.

Optical Character Recognition (OCR)
Optical character recognition systems use scanners to capture printed text and convert it into computer-readable characters for editing. See OCR and document scanner.

Scanners and Cameras
Scanners are similar to digital cameras, except cameras can focus into infinity. Desktop scanners have physical dimensions that determine the size and bulk of the material that can be scanned. Automatic feeders are used to scan stacks of paper, typically for OCR jobs.

Scanners are rated in dots per inch (dpi), whereas cameras are rated in total pixels. Both scanners and cameras have an optical resolution (the real lens resolution) and an interpolated resolution computed by software. The higher the optical, the better.

Scanners are also rated by the maximum color depth of each pixel (how many colors can be stored). At minimum, scanners support 24-bit color, and many go up to 48 bits. See optical resolution, interpolated resolution, 4K resolution, document scanner, flatbed scanner, sheet-fed scanner, handheld scanner, drum scanner, slide scanner, photo scanner and digital camera.


Desktop Scanners
The flatbed scanner is the most common desktop scanner. A transparency adapter provides a light source from the top for scanning 35mm slides and film negatives. Slide scanners are specialized for only slides and film (see slide scanner).







High-End Drum Scanner
Drum scanners are used for commercial graphics production and applications that require the highest quality scanning (see drum scanner). This earlier Howtek scanner provided an optical resolution up to 4,000 dpi. (Image courtesy of Howtek, Inc.)

scanner


scanner

 [skan´er] 1. a device that converts an image, such as from a patient, to a format appropriate for viewing on a computer or being transmitted electronically.2. equipment used for producing a scan or scanning.

scan·ner

(skan'ĕr), A device or instrument that scans.

scanner

(skăn′ər)n.1. An optical scanner.2. A device, such as a CT scanner or PET scanner, for observing internal organs, tissues, and other parts of the body.

scanner

Imaging A popular term for a device used for various imaging procedures–eg, CT scanner Instrumentation A device that measures differences in chromatic or radioactive intensity on a 2-D matrix–eg, electropherogram or chromatogram, to quantify various substances

scan·ner

(skan'ĕr) A device or instrument that scans.
LegalSeeresolutionFinancialSeeResolution

SCANNER


AcronymDefinition
SCANNERSurface Condition Assessment for the National Network of Roads (UK)

See SCNR

scanner


  • noun

Synonyms for scanner

noun someone who scans verse to determine the number and prosodic value of the syllables

Related Words

  • reviewer
  • referee
  • reader

noun an electronic device that generates a digital representation of an image for data input to a computer

Synonyms

  • digital scanner
  • image scanner

Related Words

  • data input device
  • input device
  • electronic device

noun a radar dish that rotates or oscillates in order to scan a broad area

Related Words

  • dish aerial
  • dish antenna
  • saucer
  • dish

noun a radio receiver that moves automatically across some selected range of frequencies looking for some signal or condition

Synonyms

  • electronic scanner

Related Words

  • detector
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更新时间:2024/9/23 2:32:31