| 词汇 | isotope |
| 释义 | isotope noun[ C ] physics, chemistry specializeduk /ˈaɪ.sə.təʊp/ us /ˈaɪ.sə.toʊp/ a form of an atom that has a different atomic weight from other forms of the same atom but the same chemical structure: 同位素 a radioactive isotope of hydrogen氢的放射性同位素 Physics: atoms, molecules & sub-atomic particles acceptor alpha particle anti-radical antilepton antimatter antineutrino benzene ring beta decay beta particle hadron Higgs boson interatomic interelectronic interionic molecularly monatomic multi-molecular multiparticle muon positron isotope | American Dictionaryisotope noun[ C ] us/ˈɑɪ·səˌtoʊp/ physics, chemistry a form of an atom which has a different atomic mass from other forms of the same atom but the same chemical structure Examples of isotopeisotope This is no doubt related to the increased interest in gas centrifuges as a means of separating uranium isotopes. It is commonly believed that both processes are very efficient and do not cause much fractionation of the isotopes. Scope for use of stable carbon isotopes in discerning the incorporation of forest detritus into aquatic foodwebs. In two other patients, the uptake of isotope by the right ventricle did not fall with time as much as expected following the arterial switch. Both also had higher scores for left ventricular uptake of isotope than the two patients who were considered unsuitable for conversion to the arterial switch. When using carbon, however, the carbon 11 isotopes produced by fragmentation are positron emitters. We have recently developed an isotope pulse-chase experiment using quantitative mass spectrometry that permits assembly kinetics to be measured in real time. These differences are also consistent model predictions of sulfur isotope fractionations produced by biosynthetic networks. The processes as monitored by stable isotopes seem too slow to generate distinct glacial periods. All aspects are covered: mineralogy, major- and trace-element compositions, and isotope (radiogenic and stable) geochemistry. Disentangling a rainforest food web using stable isotopes: dietary diversity in a speciesrich ant community. Structure of river food webs revealed by stable isotope ratios. We see that fully closed pore graphites prevents this contribution to hydrogen isotope inventory because there is no continuous surface leading deep into the graphite. 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. Collocations withisotopeisotopeThese are words often used in combination with isotope. Click on a collocation to see more examples of it. heavy isotopes This type of fission (called spontaneous fission) is rare except in a few heavy isotopes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. isotope analysis The following two papers deal with osteological and isotopeanalysis of the human remains of the 37 individuals recovered. isotope dilution The argon analysis was performed using the isotope dilution procedure on a noble gas mass spectrometer in duplicate. 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. See all collocations with isotope |
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