機器
accessory
assembly
bolt
build
building
car
chrome
closeup
connection
construction
detail
dirty
engineer
engineering
equipment
fasten
fastener
fix
fixing
garage
grunge
hardware
head
hex
industrial
industry
iron
machinery
mechanic
mechanical
mess
messy
metal
metallic
nut
object
old
repair
repairing
rusty
spanner
stainless
steel
threaded
tighten
tool
workshop
wrench