機器
background
blade
circle
circular
construction
detail
diamond
disc
disk
drill
electric
engineering
equipment
factory
flash
grind
grinder
hole
hollow
industrial
industry
iron
light
manual
manufacture
manufacturing
mechanic
metal
part
polish
production
protection
rotate
round
safety
smooth
spark
speed
spin
steel
technology
tool
treatment
turning
welding
wheel
work
worker
workshop