| 释义 |
DictionarySeepenetrometerstep wedge
step wedge[′step ‚wej] (graphic arts) A series of tones in steps from white to black usually on film or a glass plate for testing purposes. step wedge
step wedgeA quality control device consisting of increasing thicknesses of absorber through which radiographs are taken to determine the amounts of radiation reaching the film.See also: wedgestep wedge (step wej) Triangular aluminum device placed over a radiographic film during exposure to determine the penetrating ability of an x-ray beam.
Synonym(s): penetrometer. FinancialSeewedge |