英文關鍵字
abrasive
blade
block
blue
circular
closeup
craft
cut
device
drives
dust
electric
electrical
emery
equipment
fillet
flies
grind
grinder
grinding
hand
home
industry
instrument
iron
knife
machine
machinery
man
mans
manual
manufacture
metal
metallic
polishing
power
preparation
preparing
process
safety
sharp
sharpen
sharpened
sharpener
sharpeners
sharpening
spark
stainless
steel
stone
straightening
technology
tool
wheel
work
workshop