radioactivity

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radioactivity 是什么意思

中文释义

n. 放射性

[化] 放射性

英文释义

n the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay

radioactivity 的真实例句

以下例句摘自真实英文文章，看看 radioactivity 在自然语境里怎么用：

They took video of the wreckage, sampling the surrounding water, sea life, and sediment to measure radioactivity.

—— The Fate of a Soviet Nuclear Sub Decades After It Sank

Results from the first use of low radioactivity argon in a dark matter search.Phys.

—— Detection of atmospheric ⁴²Ar at the 10⁻²¹ level by atom counting

The more recent buzz around radioactivity in medicine centres on something called radioligand therapy.

—— We need more radioactive drugs. Can we make them from nuclear waste?

Radioactivity levels were too high to stay for longer than a few minutes, and staff always rushed her away.

—— A Chernobyl Widow’s Tragedy, Forty Years Later

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