英文關鍵字
black
box
cable
circuit
closeup
colored
construction
craftsmanship
device
domestic
electric
electrical
electrician
electricity
energy
engineer
fixing
fuse
grey
home
house
household
indoors
installation
installing
interior
job
man
manual
metallic
panels
plastic
power
reliable
service
several
smart
specialist
standing
supply
support
switches
test
tester
view
voltage
white
wires
work
worker