| 词汇 | radon |
| 释义 | radon noun[ U ] uk /ˈreɪ.dɒn/ us /ˈreɪ.dɑːn/(symbolRn) a chemical element that is a radioactive gas formed when radium decays and found naturally in rock and soil: 氡（镭衰减时形成的一种放射性元素，发现自然存在于岩石和土壤中） Tests showed high radon levels.试验表明氡含量较高。 Chemical elements actinium alkali metal americium astatine berkelium brimstone bromine calcium fluorine germanium lithium manganese nickel plutonium quicksilver selenium silicon sodium sulphur transition metal radon | American Dictionaryradon noun[ U ] us/ˈreɪ·dɑn/ a colorless radioactive gas that is formed when radium (= a chemical element) and some other substances break down Examples of radonradon The radon concentration is predicted in normal environmental conditions. We have always lived in a tough, dynamic neighbourhood-rats, radon, retrovirus-and we always will. A short chapter on applied geology includes mineral, energy and water resources, geotechnical considerations (= engineering geology) and natural radon emissions. Discrepancies between measured and predicted values of radon indicate likely seismic activity. The serious problem of radon in caves gets only passing mention. For most people, radon presents a more serious risk than all other natural sources of radioactivity put together. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 It is as if people believe that their homes are impregnable to radon gas because they cannot see or hear it. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 These invitations will ensure that every household in the most radon-affected parts of the country will have been offered a free radon measurement. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 This is the radon concentration at which it is recommended that remedial action be taken to reduce levels in the home. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 It has been known for a long time that occupational exposure to radon in uranium mines is associated with an increased incidence of lung cancer. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 It is my view that free radon measurements should be made available to householders living in high radon areas. From Europarl Parallel Corpus - English However, there is no national programme of radon monitoring for our schools. From Europarl Parallel Corpus - English There is no reliable method of predicting radon levels from site measurements before house construction. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 One of our greatest problems at present is radon gas. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The survey involves the use of a simple kit to test for radon. 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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