英文關鍵字
abrasives
angle
blade
circle
circular
closeup
construction
craft
cut
cutting
disc
disk
electric
equipment
factory
fly
for
grinder
industrial
industry
iron
light
machine
manual
manufacture
manufacturing
mechanic
metal
orange
part
parties
power
rotary
rotate
round
safety
saw
sawing
sharp
sparks
spin
steel
technical
technology
tool
turning
wheel
work
worker
works
workshop