| 词汇 | barium |
| 释义 | barium noun[ U ] uk /ˈbeə.ri.əm/ us /ˈber.i.əm/(symbolBa) a chemical element that is a soft, silver-white metal, is alkaline, and combines with oxygen very easily钡（一种质软的银白色金属元素，碱性、易氧化） Chemical elements actinium alkali metal americium astatine berkelium brimstone bromine calcium fluorine germanium lithium manganese nickel plutonium quicksilver selenium silicon sodium sulphur transition metal Barium gives to the arc a fairly white color. Barium is a constituent of certain mineral waters. Radium is a metallic element chemically resembling barium. The chloride of barium produces the deepest color. The salts of barium are also cardiac poisons. barium | American Dictionarybarium noun[ U ] us/ˈbær·i·əm, ˈbeər-/ chemistry a soft, gray-white chemical element that is a metal Examples of bariumbarium Elicitation of retinal spreading depression by barium ions. The cocktail and barium solutions also differed in their effect on the membrane potential of the cell and its input resistance. If, by that time, there is no improvement in constipation, then colonoscopy or barium enema and sigmoidoscopy should be done. If society is willing to pay $60,000 for a year of life, 5-year double-contrast barium enema is the best candidate. The lower panel shows the effect of replacing the extracellular calcium with barium. Both are equally selective for barium and calcium, have a relatively low sensitivity to external cadmium, and a negative activation range. C-bands in human metaphase chromosomes treated by barium hydroxide. Therefore, where clinical history indicates, it is advisable to proceed to endoscopy or barium studies of the gastrointestinal tract. Readings were standardized for 100% reflectance with barium sulphate. The reference was a barium sulphate standard plate. It can be diagnosed by the characteristic features revealed by a barium swallow. Such patients may require investigation with videofluoroscopy, barium swallow or endoscopy. Calcium is probably an indicator of levels with slump sediment, whereas barium levels could be associated with humans concentrating plant material. Compared with the younger group, the barium examination replaced the laboratory serology strategy as one of the four cost-effective strategies. We observed how the changes in dynamics evolved while the blocking effect of barium was taking place. 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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