| 词汇 | radioisotope |
| 释义 | radioisotope noun[ C ] physics specializeduk /ˌreɪ.di.əʊˈaɪ.sə.təʊp/ us /ˌreɪ.di.oʊˈaɪ.sə.toʊp/ an isotope that gives off radiation (= a form of energy)放射性同位素 Physics: radiation & radioactivity alpha particle background radiation decay electromagnetic radiation gamma radiation gamma ray irradiation luminosity non-ionizing non-irradiated nonradioactive radioactivity sievert spectrometer spectrometric spectrometry UPF UVA UVB weak force radioisotope | American Dictionaryradioisotope noun[ C ] us/ˌreɪ·di·oʊˈɑɪ·səˌtoʊp/ chemistry, physics an isotope that gives off radiation (= form of energy) Examples of radioisotoperadioisotope In diagnosing pulmonary embolism, radioisotope scanning has dominated during regular working hours and computed tomography during on-call hours. A cyclotron is required to produce fluorine18, a radioisotope with a half-life of less than 2 hours (110 min), which makes storage impossible. Consider laboratory-based alternatives to in situ experiments involving any radioisotope, stable isotope, or other tracer. These variables were measured before the animal was placed on bypass and then at the same five points as the radioisotope injections. Laser generation of proton beams for the production of short-lived positron emitting radioisotopes. A reactor or radioisotope source generates heat. Model equations for condensation biosynthesis using stable isotopes and radioisotopes. Carotid blood flow was measured continuously by the electromagnetic flow meter placed on the single common carotid trunk and cerebral blood flow was measured by radioisotope microspheres. Scientific activities, such as the use of radioisotopes for labelling, have the potential to introduce radioactivity, and lubricant fluids, used with ice drills, will inevitably remain in the ice sheet. This is a company which has a worldwide reputation as a leading supplier of radioisotopes for industry, medicine and research. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 It may be that industry has feared to use radioisotopes or has been unaware of their value. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 It was only at a later date that it became necessary to have further production of radioisotopes. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 It has also had considerable success on its own account in selling radioisotopes, fuel and reprocessing services in overseas markets. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The trade has comprised the supply of very small quantities of radioisotopes used in industrial analysis and academic research. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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