英文關鍵字
blue
broadcasting
business
cell
cellular
communication
construction
design
distribution
electric
electrical
electricity
energy
engine
engineer
engineering
equipment
high
industrial
industry
metal
network
phone
pole
power
radio
satellite
silhouette
sky
station
steel
structure
supply
tall
technology
telecommunication
telephone
television
tower
transformer
transmission
transmitter
voltage
wave