機器
abrasive
action
activity
angle
blade
body
circular
concrete
construction
cut
cutter
diamond
disc
disk
drill
electric
engineer
engineering
equipment
factory
floor
grind
grinder
handyman
industrial
industry
job
manual
manufacture
manufacturing
marble
metal
polish
power
production
protection
rock
rotate
saw
service
steel
stone
technology
tool
turning
wheel
work
worker
workshop