機器
appliance
brush
buffing
cement
ceramic
chemical
clean
cleaner
cleanser
company
concrete
corporate
detergent
dirty
electric
equipment
facility
floor
hall
improvement
indoor
industrial
industry
job
machinery
maintaining
maintenance
marble
modern
office
polish
polisher
pressure
professional
room
rubber
scrub
scrubber
service
surface
sweeper
sweeping
tile
tool
wash
water
wet
worker
working