| 词汇 | zirconium |
| 释义 | zirconium noun[ U ] uk /zɜːˈkəʊ.ni.əm/ us /zɚˈkoʊ.ni.əm/ (symbolZr) a chemical element that is a hard, silver-grey metal锆 Chemistry: metals & metalworking anti-tarnish bar magnet base metal bimetallic brazen brazier bullion ferrous galvanized gilt gold leaf lode magnet silver plate swage tarnished tinplated untarnished vermeil wrought iron Examples of zirconiumzirconium Titanium, scandium, and zirconium form stable chemical compounds called metal hydrides when combined with hydrogen or its isotopes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In this process, the strongly coordinating methyl group transfers to the boron to expose a reactive site on zirconium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. As a pure powder, zirconium hydrides are used as hydrogenation catalysts, in powder metallurgy, and as getters in the vacuum tube industry. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Metal actinide fuel is typically an alloy of zirconium, uranium, plutonium, and minor actinides. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Similar to zirconium and hafnium, an additional omega phase exists, which is thermodynamically stable at high pressures, but is metastable at ambient pressures. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The complex includes a uranium deposit and a large reserve of rare earth elements, zirconium, niobium and beryllium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Mesoporous oxides of niobium, tantalum, titanium, zirconium, cerium and tin have also been reported. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Its business segments include zirconium compounds, electronic materials and electronic ceramics, new energy materials, and rechargeable batteries. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Zirconium and its alloys are highly reactive toward oxygen, nitrogen, and hydrogen. The same is true for the vanadium, rubidium and zirconium concentrations in the sediment. Figure 21 presents the magnetic field dependence of the gas and metal ion contents for cathodes made of yttrium and zirconium and oxygen as the fill gas. The zirconium water reaction was implicated in the generation of the hydrogen, which subsequently exploded and blew the top off. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Space age materials such as uranium, beryllium, zirconium and titanium are of great value to the hospital service and for specialised machinery used elsewhere. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 There are a lot of metallurgical problems; many odd metals like beryllium or zirconium have to be produced and examined to see if they have suitable properties. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Due to the lanthanide contraction of the elements in the sixth period, zirconium and hafnium have nearly identical ionic radii. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. 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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