surco
ridge ; groove ; furrow ; indentation ; sulcus [sulci, -pl.].
He realized that the lines corresponded to the ridges of his greasy curduroy trousers.
The grooves on a 78 rev/min audio disc are 150 µµ (micromicron) apart.
The design was cut in a wax ground so that, when the plate was immersed in acid, the furrows allowed the acid to bite into the copper, making grooves that would hold ink Mezzotint = The design was cut in a wax ground so that, when the plate was immersed in acid, the furrows allowed the acid to bite into the copper, making grooves that would hold ink Mezzotint.
Indeed it is normally possible to see with a raking light which was the mould side of the sheet, for it shows a pattern of both chain and wire indentations, while the other side (the felt side) is more or less flat, or shows wire humps only.
The precise pattern of gyri and sulci in the brain can vary considerably from person to person, but many features are common to all people.
característica del surco
groove characteristic
Other physical details, including, as appropriate, type of recording, playing speed, groove characteristics, track configuration, number of tracks, number of sound channels, recording and reproduction characteristics.
hacer surcos
groove
If necessary, roughen the face of the slopes by grooving the surface as described above.
levantar al hacer surcos
plough [plow, -USA]
The burrs ploughed up by the graver were scraped smooth, the remaining wax was removed and the plate was ready for use.
