amplifier
anode
antique
backgrounds
bubble
casing
cathode
circuits
construction
control
conversion
design
detection
device
electric field
electrode
electromagnetism
electron flow
electron tube
electronic
electrons
energy
engineering
glass
history
idea
industrial
kinetic energy
magnetic field
microwave
microwave weapons
monument
object
old
power
project
radar
radio
relic
service
signal
styles
system
technology
television
transfer
transmitter
tv
vacuum tube
vintage
定額
ELECTRON TUBE - A device in a closed glass housing used in electronic circuits to control the flow of electronsの素材 [FY310229375684]
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