actinon

n. 錒射氣

學術名詞

• 錒射氣：物理學、電機工程、核能、氣象學
• 錒射氧：化學術語

英文釋義

1. any of a series of radioactive elements with atomic numbers 89 through 103
2. an radioisotope of radon with a half-life of about four seconds