英文關鍵字
background
blade
bolt
closeup
concept
craft
cut
device
emery
equipment
fabric
fabrication
form
friction
glove
grind
grinder
heavy
industrial
industries
industry
iron
knife
machine
machinery
man
manufacture
master
metal
people
power
process
production
profession
professional
sandpaper
sharpen
sharpener
sharpening
sparkle
sparks
steel
stone
table
tool
tradition
traditional
wooden
work
worker
working
workshop