機器
advert
axe
barrier
build
building
business
caution
conceptual
construction
danger
drill
element
engineering
equipment
factory
hammer
handle
illustration
improvement
industrial
industry
machinary
maintenance
maintenancetools
mechanical
object
occupation
pliers
recondition
reconstruction
repair
safety
screwdrivers
security
service
toolbox
tools
under
work
wrench