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radium [ˈreıdıəm] 名词

I . medium <mediums or media> [ˈmiːdıəm] 名词

II . medium <mediums or media> [ˈmiːdıəm]

sodium [ˈsəʊdıəm] 名词

rubbish [ˈrʌbıʃ] 名词

2. rubbish:

stadium <stadiums or stadia [ˈsteıdıə] > [ˈsteıdıəm] 名词

barium [ˈbeərıəm] 名词

uranium [jʊəˈreınıəm] 名词

单语范例(未经PONS编辑处理)

英语
Two rubidium atoms were used to create the molecule which survived for 18 microseconds.
en.wikipedia.org
Rubidium-82, one of the element's non-natural isotopes, is produced by electron-capture decay of strontium-82 with a half-life of 25.36 days.
en.wikipedia.org
It is also used as a raw material for preparation of other rubidium compounds and rubidium metal, for manufacture of catalysts and in scintillation counters.
en.wikipedia.org
Zone pegmatite ore bodies containing mineable quantities of caesium as pollucite or the lithium minerals lepidolite are also a source for rubidium as a by-product.
en.wikipedia.org
Rubidium hydride will react violently with water or air and careful storage is necessary.
en.wikipedia.org
Rubidium is very similar to potassium and therefore tissue with high potassium content will also accumulate the radioactive rubidium.
en.wikipedia.org
The geochemistry of the rock shows it is enriched in potassium, strontium and rubidium and light rare earth elements.
en.wikipedia.org
The very short half-life of 76 seconds makes it necessary to produce the rubidium-82 from decay of strontium-82 close to the patient.
en.wikipedia.org
It is one of a number of alkali vapours (including rubidium and potassium) that are used in this way, as well as helium.
en.wikipedia.org
Group velocities as low as 8 m/s were measured in a warm thermal rubidium vapor.
en.wikipedia.org

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