機器
abstract
automatic
automation
background
cog
cogwheel
concept
construction
control
conveyor
design
device
element
engine
engineering
equipment
fabrication
factory
flat
gear
gearing
gearwheel
graphic
illustration
industrial
industry
lever
machinery
manufacture
manufacturing
mechanical
mechanism
modern
motion
object
operation
plant
power
process
processing
production
progress
style
system
technical
technology
wheel
work
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