镭 (léi) — radium

定義

例文

• 居里夫人发现了镭这种放射性元素。
  Jū lǐ fū rén fā xiàn le léi zhè zhǒng fàng shè xìng yuán sù.
  Madame Curie discovered the radioactive element radium.
• 镭的发现对医学治疗有重要意义。
  léi De fā xiàn duì yī xué zhì liáo yǒu zhòng yào yì yì.
  The discovery of radium has significant implications for medical treatment.
• 早期钟表曾用镭来让指针发光。
  Zǎo qī zhōng biǎo céng yòng léi lái ràng zhǐ zhēn fā guāng.
  Early clocks and watches once used radium to make the hands glow.