| 单词 | X-Ray Film-Screen System |
| 释义 | X-Ray Film-Screen System《英文msh词典》X-Ray Film-Screen System [入口词] X-Ray Film-Screen System [主题词] X-Ray Intensifying Screens [英文释义] Screens which absorb the energy in the x-ray beam that has penetrated the patient and convert this energy into a light pattern which has as nearly as possible the same information as the original x-ray beam. The more light a screen produces for a given input of x-radiation,the less x-ray exposure and thus shorter exposure time are needed to expose the film. In most film-screen systems,the film is sandwiched between two screens in a cassette so that the emulsion on each side is exposed to the light from its contiguous screen. |
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