英文關鍵字
aged
ancient
antique
background
broadcasting
closeup
code
coding
communicate
communication
connection
control
coordinates
data
device
electric
electrical
equipment
finger
hand
help
historical
key
machine
message
military
morse
object
obsolete
old
operator
radio
retro
send
signal
sos
table
technology
telegram
telegraph
telegraphic
telegraphy
tool
transceiver
transmit
uniform
vintage
war
wire