機器
abrasive
angle
apartment contractor
architecture
builder
building
cable
carpenter
circular
construction
craftsmanship
disc
disc finishing
dust
electric
electric tool
electrical
engineer
equipment
grinder
grinder grinding
grinding
hand
handyman
industrial
industrial instrument
industry
job
man
men at work
power
production
professional
sander
sanding smoothing
sandpaper
technology
tool
tool work
work
workshop