英文關鍵字
abstract
architecture
background
bar
bars
building
cement
closeup
concrete
construct
construction
corrosion
engineering
equipment
frame
group
industrial
industry
iron
line
manufacturing
material
materials
mesh
metal
new
parallel
pattern
pile
rebar
reinforce
reinforced
reinforcement
reinforcing
rod
rust
rusty
square
stack
steel
strength
strong
structural
structure
technology
texture
textured
wire