英文關鍵字
aerospace
aircraft
aluminum
auto
aviation
bolts
closeup
construction
electric
equipment
factory
fuselage
gray
industrial
industry
jet
machine
maintenance
manufacturing
mechanic
mechanical
metal
metallic
military
nut
object
outside
panels
plane
production
rivets
service
shop
spanner
steel
tail
technology
textured
tighten
tools
transportation
vehicle
view
work
wrench