Electrical
来自Big Physics
mid 17th century: from modern Latin electricus, from Latin electrum ‘amber’, from Greek ēlektron (because rubbing amber causes electrostatic phenomena).
etymonline
electrical (adj.)
1630s, "giving off electricity when rubbed," from electric + -al (1). Meaning "relating to electricity, run by electricity" is from 1746. Related: Electrically.
