機器
adult
alloy
aluminum
assembly
automated
background
business
cnc
construction
cutter
cutting
detail
engineering
equipment
factory
hard
heavy
industrial
industry
labor
lathe
machinery
machining
maintenance
manufacture
manufacturing
mechanical
metal
metalwork
metalworking
mill
milling
pinion
plant
process
processing
production
shaft
spiral
stainless
steel
technology
threaded
tool
tooling
turning
wheel
work
workshop