| 词汇 | radioactive |
| 释义 | radioactive adjective uk /ˌreɪ.di.əʊˈæk.tɪv/ us /ˌreɪ.di.oʊˈæk.tɪv/ having or producing powerful and dangerous energy that comes from the breaking up of atoms: 具有放射性的；有辐射性的 Uranium is a radioactive material.铀是一种放射性物质。 radioactive waste放射性废料 considered extremely dangerous or harmful: The deputies of great dictators often become radioactive by association. Why is this such a radioactive topic? The issue of race is radioactive for this administration. All mail to the newsroom is tested for radioactive and chemical substances. The waste consists of highly radioactive used fuel rods from power reactors. Hypocrisy is such a radioactive subject in politics that it's very difficult to defend a public figure and gain empathy. Physics: radiation & radioactivity alpha particle background radiation decay electromagnetic radiation gamma radiation gamma ray irradiation luminosity non-ionizing non-irradiated nonradioactive radioisotope sievert spectrometer spectrometric spectrometry UPF UVA UVB weak force You can also find related words, phrases, and synonyms in the topics: Dangerous and harmful radioactive | American Dictionaryradioactive adjective us/ˌreɪ·di·oʊˈæk·tɪv/ physics possessing or producing energy from the breaking up of atoms, or resulting from the production of such energy: radioactive waste radioactivitynoun[ U ]us/ˌreɪ·diˌoʊ·ækˈtɪv·ɪ·t̬i/ Examples of radioactiveradioactive An aliquot was removed to determine the uptake of the radioactive precursor. This was used as the starting material for the selective radioactive amplification. Production of radioactive nuclides by energetic protons generated from intense laser-plasma interactions. By the technique of radioactive dating, it has been shown that the chondrites all crystallized 4.6r 109 years ago. Blanks of no radioactive slides were also run. In either case the toxic or radioactive waste is trapped in the solid, preventing it from leaching into the local water table. The amplified products are visualized on sequencing polyacrylamide gels using radioactive labelling, silver-staining technique, or by using fluorescence-based capillary electrophoresis. Mutagenicity tests on bacterial cultures using exceptionally radioactive heavy mineral beach sands : irradiation or chemistry? Such preparations are metabolically active as shown by then* ability to metabolize radioactive glucose. In recent years, regulatory problems associated with the use of radioactive materials have limited their use in field studies. In radioactive beam generation experiments, resolution of the isotopes and transmission of the secondary beam through the fragment separator are very important problems. It is expected that the latter can regulate the crossfield plasma particle transport in tokamak discharges which are contaminated by radioactive dust. This is the core of a new technology developed to treat buried low-level radioactive or toxic waste. Erosion of the granites yields specific minerals including quartz, radioactive (uranium-, thorium-bearing) phases and phosphates, which could play a role in early evolution. Examples of hazardous systems include those used in the production, storage, and transportation of environmentally harmful materials, such as oil or radioactive waste. 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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