读音

/ˈreɪdiəʊækˈtɪvɪti/

释义

• 名词: 物质自发放出射线的性质或状态，通常指放射性。例如: “Radioactivity is the process by which certain elements decay over time.”
• 形容词: 形容具有放射性的。例如: “Radioactive materials must be handled with extreme caution.”

短语

• “Radioactive decay” 指放射性物质衰变的过程。
• “Radioactive isotopes” 是指不稳定的同位素，会经历放射性衰变。

例句

• 名词: “Scientists study radioactivity to understand the origins of the universe.”
• 形容词: “The radioactive waste generated by nuclear power plants requires careful disposal.”

同义词

• Radioactivity can be synonymous with:
  • Radioisotropy
  • Nuclear radiation
  • Radioactive emission