19th century
aged
alertness
attention
bolt
bolts
buildings
built structure
cable
carpentry
century
checking
closeup
concept
concepts
connection
control
controller
danger
detail
engineering
equipment
focus
focus concept
girder
ideas
industrial
industry
iron
iron metal
iron beam
learning
magnifying glass
metal
nineteenth
nut
old
oxidized
profile
protection
research
rod
rust
rusted
rusty
safety
searching
security
service
steel
structure
surveillance
technology
the past
tie rod
tierod
welding
welding steel
定額
Control and surveillance of the conservation status of an old rusty welded metal structure - Concept seen through a magnifying glassの素材 [FY310172004124]
この写真素材のタグ
最近チェックした素材