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control panel
multimeters
radioteletype
control desk
the interior of the cockpit
switchboard operator
teletype
controls
switchboard
flight board
usnr
radiotelegraph
avionics
instrument panel
telephone operator
stenographers
stenographer
teleprinter
switchboards
radar equipment
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GIF 动图
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control panel
radioteletype
multimeters
control desk
the interior of the cockpit
switchboard operator
teletype
controls
flight board
radiotelegraph
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switchboard operator
control desk
teletype
lpfm
usnr
radioteletype
man with a computer
ultrasparc
telephone operator
voormann
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switchboard operator
telephone operator
radioteletype
microfilming
teletype
switchboard
microfilms
switchboards
stenographers
linotype
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tektronix
oscilloscopes
radiocommunications
oscilloscope
multimeters
radiocommunication
seismologists
radiophonic
instrumentation
radio relay
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radiotelegraph
telephone operator
radioteletype
teletype
radio relay
man with a computer
stenographer
switchboard operator
radiotelephone
computer room
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control desk
switchboard
switchboards
switchboard operator
control panel
arpanet
heathkit
eniac
oscilloscopes
ampex
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radioteletype
switchboard operator
teletype
radio relay
control desk
tektronix
switchboard
radiocommunications
teleprinter
gestetner
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switchboard operator
control desk
switchboards
switchboard
trading floor
telephone operator
eniac
computer room
digitization of library
control center
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microfilming
radioteletype
projectionists
microfilms
kinematograph
microfilm
stenographers
teletype
microfilmed
gestetner
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radioteletype
teletype
radiophonic
microfilms
electronic records
phototypesetting
microfilming
microfilm
audiophiles
lpfm
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radio set
lpfm
kpfk
wplj
radioprogramas
tube radio
radio relay
radio
radio network
radiotelevisione
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mimeograph
teletype
radioteletype
gestetner
teleprinter
telegraphist
typewriting
linotype
polygrapher
stenographer
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signalmen
signallers
radar equipment
radio relay
rearming
radiotelegraph
loadmasters
multimeters
telephone operator
switchboard operator
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telephone operator
switchboard operator
switchboard
switchboards
radiocommunications
telegraphers
radiotelephone
radiophonic
radionics
heathkit
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radio relay
lpfm
radiocommunications
radiocommunication
switchboard
switchboards
radioteletype
radio network
telefunken
control desk
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radar equipment
switchboard operator
oscilloscope
usnr
dispatcher
control desk
man with a computer
seismologist
radiocommunications
call sign
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control desk
radiophonic
switchboards
control panel
switchboard
mixing board
soundboard
console mixing
soundboards
mixing desk
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switchboards
switchboard
eniac
switchboard operator
telephone operator
bletchley
synthi
radioteletype
old calculating machine
teletype
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switchboard operator
teletype
control desk
radioteletype
telephone operator
microfilm
switchboard
microfilms
microfilmed
heathkit
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radar equipment
the interior of the cockpit
tombaugh
telescope
tereshkova
astronomer
radiotelescopes
theodolites
surveying equipment
hildebert