機器
abrasive
blade
borer
business
circle
circular
closeup
cutter
disk
drill
electric
engineering
equipment
factory
fire
grind
grinding
grindstone
hand
industry
instrument
manual
manufacturing
mechanical
metal
metalwork
mower
object
polishing
power
production
repair
saw
sharp
sharpener
sharpening
sparks
speed
steel
stone
strength
technology
textured
tool
welding
wheel
work
worker
workshop