| 释义 |
Noun: Th- A soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands
- thorium, atomic number 90 - The fifth day of the week; the fourth working day
- Thursday
Type of: metal, metallic element, weekday Part of: monazite, thorite Encyclopedia: Th |