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wooden cable reel
seed machine
cable reel
electric generator
old calculating machine
calculating machine
milling machine
extruder
galvanometer
simple machine
gravimeter
commutators
wind powered water pump
reprap
internal-combustion engine
patent motor car
turbogenerator
sewing machine
circular saw
tinkertoys
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GIF 动图
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wooden cable reel
galvanometer
seed machine
cable reel
reprap
calculating machine
old calculating machine
simple machine
milling machine
kinematograph
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sewing machine
sewing thread
bobbin with felt cover
sewing notions
sewing tools
kinematograph
darning needle
stitching
sewing buttons
hemming
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compressors
galvanometer
electropneumatic
electric generator
steam engine
rectifiers
wind engine
valvetrain
gravimeter
automatique
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microbrewer
reprap
extruder
stereolithography
electrospinning
calorimeter
multiplane
gravimetric
gravimeter
calorimeters
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handheld electric megaphone
tape dispenser
magnetic tape
gyromagnetic
cable reel
circular saw
wooden cable reel
adhesive tape
pencil sharpener
motor skills toy
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wind power generator
wind powered water pump
wind generator
wind engine
wind turbine
suvero
pantograph
radiotelescopes
kinetic art
magnetotail
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industrial robot
microfilming
milling machine
photolithographic
sewing thread
hat manufacture
machining
gravimeter
lathes
kinetic art
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milling machine
lathing
linotype
sewing machine
brake mechanism
typesetters
lathes
bandsaw
straw press
microtome
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brake mechanism
presser foot
wooden cable reel
galvanometer
gyroscopes
cable reel
comparators
mechanism
rotary valves
gyrocompass
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milling machine
drilling machine
circular saw
mechatronic
lathes
mechatronics
electric generator
cable reel
cognex
impact drill
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handloading
vintage cork screw
micrometer
pencil sharpener
ball milling cutter
impact drill
rope tensioner
piston valve
tensioner
wooden cable reel
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turbo jet engine
plane engine
carburettors
race car engine
aircraft engine
carburetor
mercedes engine
brake mechanism
premotor
wind engine
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valves
piston valve
rotary valves
wooden cable reel
gyroscopes
cable reel
dynamometer
wheel hub
cog wheels
drive axle
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turbo jet engine
race car engine
aircraft engine
carburettors
plane engine
carburettor
wind engine
wastegate
car engine
jet engine
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reprap
seed machine
wooden cable reel
radio-controlled car
simple machine
cable reel
magnetometer
milling machine
magnetron
rc model
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double head microscope
microtome
plethysmograph
pentaprism
stereolithography
micromachining
magnetron
milling machine
hydropneumatic
gyroscope
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gyroscopes
cable reel
galvanometer
potentiometer
wooden cable reel
gyrocompass
magnetometer
gyroscope
reprap
brake mechanism
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sewing machine
sewing room
lathing
microtome
sewing factory
sewing notions
old calculating machine
bindery
seamstresses
hemming
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rc model
radio-controlled car
lawn mower robot
patent motor car
battery car
tin car
internal-combustion engine
motor scooter
minibot
birotron
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stereolithography
nanolithography
microprinting
photolithography
photolithographic
cubesat
micromachining
extruder
reniform
microdrives