機器
blade
circle
circular
construction
cut
diamond
disc
disk
drill
electric
engineering
equipment
factory
flash
grind
grinder
hand
heat
industrial
industry
iron
light
man
manual
manufacture
manufacturing
mechanic
metal
power
production
protection
rotate
round
safety
spark
speed
spin
steel
technical
technology
tool
treatment
turning
welding
wheel
work
worker
workshop