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