英文關鍵字
automatic
band
blade
brass
bronze
close
cooling
cut
cuts
device
electric
engineering
equipment
factory
heavy
industrial
industry
iron
large
lathe
machine
machinery
manufacturing
mechanical
metal
plant
plastic
power
process
production
products
rod
rough
round
saw
sawing
semiautomatic
sharp
stationary
steel
technology
tool
turning
universal
wood
work
workpiece
workpieces
workshop