機器
art
asctract
assorted
background
bolt
build
chrome
close
closeup
construction
detail
engineering
equipment
fasten
fastener
fasteners
fix
gray
group
hardware
improvement
industrial
industry
iron
macro
manufacturing
many
mechanic
metal
metallic
nobody
nut
part
repair
screw
shiny
silver
small
stainless
steel
supplies
technology
thread
threaded
tool
white
work
workshop