機器
abstract
alloy
backdrop
background
complicated
concept
design
detail
dirty
drive unit
engineering
equipment
factory
flywheel
foundry
fragment
gear
industrial
industry
interaction
iron
macro
manufacture
material
mechanical
messy
metal
part
pattern
piece
placard
plant
poster
production
repair
retro
steel
structure
technology
template
texture
transportation
vehicle
vintage
wallpaper
wheel
workshop