英文關鍵字
board
box
bundle
business
cables
circuit
communications
connect
connection
construction
contact
control
covered
device
distribution
electrical
electricity
electronics
equipment
fuse
house
industry
isolated
line
metal
order
packed
panel
part
plank
plastic
plug
pole
power
residence
resource
row
safety
security
supply
switch
system
technical
technology
telephony
tilt
urban
utility
voltage
wire