The word "perforations" is correct and usable in written English.
You can use it to refer to small holes or slits made in a sheet of paper, cloth, metal or other material. For example, "The paper was carefully punched with precise perforations to hold it together."
To enable the text to be read by the pneumatic tower of the typesetter, a converter transcribes the perforations from a narrow six-, seven-, or eight-channel conventionally perforated tape to the wide tape of the Monotype system.
Blowtorched perforations outlining a large hole in the corrugated-iron border fence had been noticed by outsiders in October and mentioned in meetings with Israeli officials.
Established after the war, it runs (with perforations) all around London, to a depth of up to 50 miles, and bans almost all building on half a million hectares of land around the city.
The mold, during the three to six months of ripening, grows both in small, irregular, natural openings in the cheese and in machine-made perforations.
But in 1848 54 a machine was adapted by the British Post Office to provide stamps with separations in the course of their manufacture, and most stamps are now edged with tiny holes, called perforations, which enable them to be easily separated.
The perforations account for only about 8 percent of the screen surface and do not substantially degrade the picture.
More recently, cold-setting polymer dispersions in water have been introduced by using a low-pressure suction table, from which the water is removed through spaced perforations in the table surface with a powerful downdraft of air.
The tape unrolls in the direction opposite to that in which it was rolled up that is, in the opposite order to the way it was typed, the last line appearing first and the justifying perforations being inserted into the pneumatic tower before those for the letters and symbols.
The Teletypesetter tape is six-channelled; that is, it contains six possible positions for perforations across its width.
This allows 64 different combinations of from one to six perforations.
In this mechanism the tape passes under six sensors that register electric contacts as the perforations pass.
