英文關鍵字
adjusting
close
closeup
coolant
cooler
cooling
cutter
device
engineering
equipment
factory
fluid
hand
heavy
industrial
industry
iron
lathe
liquid
machine
machinery
machining
manufacture
manufacturing
mechanical
metal
metalwork
metalworking
mill
milling
process
production
shavings
smoke
steel
technology
tool
tools
turner
turning
work
workpiece