機器
automated
background
bit
business
closeup
cnc
construction
cut
cutter
cutting
detail
drill
drilling
engineering
equipment
factory
hard
heavy
hole
industrial
industry
instrument
iron
lathe
machinery
machining
macro
manufacture
manufacturing
mechanical
metal
metallic
metalwork
metalworking
milling
plant
power
precision
press
processing
production
silver
stainless
steel
technology
tool
turning
work
workshop