機器
blade
casting
circle
circular
construction
cut
cutting
disk
electric
engineering
equipment
factory
grind
grinder
grinding
hack
hand
industrial
industry
iron
manual
manufacture
manufacturing
mechanic
metal
part
power
production
protection
rotate
round
safety
saw
spark
sparks
speed
spin
steel
technical
technology
tool
treatment
turning
water
welding
wheel
work
worker
workshop