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film projector
gravimeter
microfilming
photolithographic
kinematograph
calorimeter
galvanometer
projectionists
cinematograph
gestetner
photolithography
microfilmed
enlarger
movie projector
filming equipment
microtome
photo equipment with full-size
microfilms
cinematronics
transmitter
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GIF 动图
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film projector
gravimeter
microfilming
calorimeter
kinematograph
photolithographic
galvanometer
projectionists
cinematograph
agfa isolette
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brewery boiler
barrel organ
wheelabrator
tender locomotive
seed machine
mutoscope
steam engine
train engine
kinetoscope
combustor
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radio device
seismometer
galvanometer
radiophone
portable radio
kinematograph
gravimeter
radio set
radiotelegraph
heathkit
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kinematograph
gravimeter
straw press
calorimeter
arithmometer
seed machine
microfilmed
double head microscope
microtome
photolithographic
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film projector
projectionists
microfilming
microtome
gestetner
microfilmed
gravimeter
milling machine
coffee roasting
gravimetric
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millwright
brewery boiler
projectionists
steam engine
cinematograph
boilermaker
steam power
film projector
engine room
engineman
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linotype
projectionists
gestetner
typesetters
photolithographic
gravimeter
milling machine
lathing
millwright
the production of the beer
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moviola
wooden cable reel
cable reel
brake mechanism
straw press
film projector
microtome
grammophon
micrometer
microfilming
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measuring bell
millwright
turbomachinery
combustor
gravimeter
the boiler room
tokamak
superconducting
annealing
pressurizer
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calorimeter
gravimeter
radiopharmaceutical
cyclotrons
sterilizer
lead accumulator
autoclave
autoclaves
pasteurization
centrifuge
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gravimeter
calculating machine
gestetner
cyclotrons
lead accumulator
milling machine
photolithographic
superconducting
radiopharmaceutical
old calculating machine
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brewery boiler
gravimeter
autoclaves
precipitators
combined heat and power plant
turbomachinery
gestetner
combustor
compressors
calorimeter
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film projector
cinematronics
movie camera
cable reel
cinematograph
microfilms
moviola
microfilm
projectionists
wooden cable reel
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wind engine
seed machine
steam engine
straw press
agricultural machine
electric generator
patent motor car
internal-combustion engine
cable reel
wooden cable reel
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fokker dr 1
fokker dr1
instrument panel
film projector
heinkel
fluoroscope
curtiss
twin-lens reflex
combustor
the interior of the cockpit
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photolithography
photolithographic
microfilming
radiotelegraph
radioteletype
telephone operator
projectionists
switchboard
microfilmed
gravimeter
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radiotelegraph
radionics
galvanometer
kinematograph
gravimeter
telegrapher
phonographic
telegraphers
electrotyping
multimeters
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moviola
graphophone
the gramophone
kinematograph
writing or drawing device
gravimeter
grammophon
cinematograph
straw press
gramophones
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autoclaves
turbina
lathes
dynamometer
cable reel
turbomachinery
switchgear
lathing
cyclotrons
old calculating machine
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rack railway
the production of the beer
engineman
old calculating machine
linotype
calculating machine
coaling
typesetters
boilermaker
lbscr