機器
alloy
aluminum
background
business
chrome
close up
cnc
connect
connecting
cylinder
cylindrical
engine
equipment
factory
folder
horizantal
image
industrial
industry
information
iron
machining
manufacture
manufacturing
mechanics
metal
metal shaving
metallic
metalwork
metalworking
mill
milling
model
nobody
part
parts
piston
production
raw
roller
shaving
silver
steel
swarf
technology
tool
turning
work
workshop