英文關鍵字
abrasive
accuracy
action
automate
automotive
closeup
cut
cutter
cuttings
detail
electric
engineering
equipment
factory
industrial
industry
iron
lathe
liquid
machine
machinery
machining
manufacture
manufacturing
material
mechanical
mechanics
metal
metalworking
mill
milling
motor
operation
part
plant
precision
pro
production
professional
rotate
rotation
shine
steel
technological
technology
tool
turning
work
workpiece
workshop