英文關鍵字
antenna
background
black
broadcast
broadcasting
building
bunch
cell
cellular
circle
city
communication
data
digital
ecology
electricity
electromagnetic
energy
equipment
field
frequency
fresh
gsm
high
industrial
industry
information
internet
knitted
line
mobile
mushrooms
network
phone
porcini
power
pylon
radiation
radio
receiver
roof
root
satellite
signal
sliced
speed
station
straw
technology
telecom
telecommunication
telecommunications
telephone
television
tower
towers
transmission
transmitter
wave
wireless