Perforation - ορισμός. Τι είναι το Perforation
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Τι (ποιος) είναι Perforation - ορισμός

ONE OF A SERIES OF SMALL HOLES IN A THIN MATERIAL OR WEB, OR THE PROCESS OF MAKING SUCH HOLES
Perforated; Perforate; Perforated edge; Perforated edges; Perforations; Microperforation; Hot needle perforation; Perferation; Perforating; Needle punch; Microperf; Perfs
  • Perforated punch card
  • Paper perforator
  • 364px
  • Perforation holes on a pair of coil stamps

perforation         
[?p?:f?'re??n]
¦ noun a hole made by boring or piercing.
?a small hole or row of small holes punched in a sheet of paper.
?the action or state of perforating or being perforated.
perforation         
n.
1.
Pertusion, piercing.
2.
Hole, aperture, opening, orifice.
perforation         
(perforations)
Perforations are small holes that are made in something, especially in paper.
Tear off the form along the perforations and send it to Sales...
N-COUNT: usu pl

Βικιπαίδεια

Perforation

A perforation is a small hole in a thin material or web. There is usually more than one perforation in an organized fashion, where all of the holes collectively are called a perforation. The process of creating perforations is called perforating, which involves puncturing the workpiece with a tool.

Perforations are usually used to allow easy separation of two sections of the material, such as allowing paper to be torn easily along the line. Packaging with perforations in paperboard or plastic film is easy for consumers to open. Other purposes include filtrating fluids, sound deadening, allowing light or fluids to pass through, and to create an aesthetic design.

Various applications include plastic films to allow the packages to breathe, medical films, micro perforated plate and sound and vapor barriers.

Παραδείγματα από το σώμα κειμένου για Perforation
1. He suggested she was suffering from stomach perforation.
2. However, Svirsky died of a stomach perforation about a week after the operation.
3. Multiple swallowed magnets can attract each other and cause intestinal perforation or blockage.
4. The spokesman said÷ "Michael Aspinall has a skull fracture and rib fractures and was operated on yesterday for intestinal perforation.
5. He was so frail that somehow in the first week there was a perforation and he needed major bowel surgery.