機器
architecture
background
building
close up
construction
control
craftsman
danger
drilling
equipment
factory
female
girl
glasses
hand
heavy
helmet
hole
industrial
industry
iron
level
material
metal
old
people
plate
platform
production
protection
quality
repair
retro
safety
shop
site
skill
steel
structure
team
teamwork
tool
transport
welder
welding
wooden
work
worker
workshop