英文關鍵字
house
connected
to
electricity
line
symbol
outline
tool
substation
automation
box
wall
chipping
drilling
wiring
linear
contour
background
lined
automatic
dimmer
duct
electric
electrician
energy
engineer
equipment
lamp
light
power
repair
service
utility
voltage
ammeter
monochrome
icon
motion
graphic
animation
pictogram
hd
animated
item
sign
black