英文關鍵字
automatic
big
bolt
business
cnc
component
construction
cutter
detail
engine
engineering
equipment
expert
factory
future
heavy
industrial
industry
large
lathe
machine
macro
makes
manufacturing
mechanical
mechanics
mechanism
metal
metalworking
mill
milling
movement
plant
precision
process
processing
production
rotation
shaving
tool
turner
turning
work
worker
working
workshop