| 释义 |
Noun: Ac- A radioactive element of the actinide series; found in uranium ores
- actinium, atomic number 89
Noun: AC- An electric current that reverses direction sinusoidally
"In the US most household current is AC at 60 cycles per second"
- alternating current, alternating electric current
Type of: chemical element, electrical energy, electricity, element Part of: uranium ore Encyclopedia: AC AC, Perth Ac |