機器
accessory
background
bolt
build
close to
close up
closeup
construction
engineering
equipment
factory
fasten
hardware
image
industrial
industry
iron
isolated
item
machinery
many
mechanic
metal worker
metallic
nobody
nut
one
part
photo
repair
screw
shiny
shop floor
shot
silver
single
small
stainless
steel
studio
thread
tool
white
work
workshop