機器
antique
automation
cog
control
details
dirty
drilling
engine
engineering
enterprise
equipment
factory
grain
heavy
industrial
industry
iron
lathe
machinery
machining
maintenance
manufacture
manufacturing
mechanical
mechanism
metal
metalwork
metalworking
mill
milling
obsolete
old
operation
precision
process
processing
production
repair
retro
service
stainless
steel
strength
technology
tool
turning
vintage
work
workshop