英文關鍵字
220
accumulator
backup
battery
black
booting
box
circuit
close
closeup
computer
current
device
display
electricity
electronics
emergency
energy
equipment
hardware
industry
isolated
module
overload
plug
power
processor
protect
protection
restart
safe
safety
screen
security
service
stability
stabilizer
standby
storage
supply
support
system
technology
transformer
uninterrupted
uninterruptible
ups
volt
voltage