英文關鍵字
220
appliances
button
cable
care
charger
close
closeup
computer
connect
connecting
connection
connector
contact
control
current
depth
device
devices
economy
electric
electrical
electricity
electronic
electronics
energy
equipment
field
filter
finger
focus
hand
includes
light
man
network
office
pin
portable
power
protection
protector
red
selective
shallow
socket
sockets
surge
switch
technology
transfer
turns
volt
wire
wires