機器
accuracy
automated
automatic
bit
business
closeup
component
computer
contemporary
controlled
cut
cutter
detail
drill
drilling
electric
engineering
equipment
factory
hole
industrial
industry
iron
lathe
machinery
manufacturing
material
mechanical
metalwork
mill
operate
operation
part
plant
precision
process
product
production
shop
solid
steel
technology
tool
work
workpiece
workshop