英文關鍵字
abstract
alloy
architecture
armored
base
batch
binding
build
cage
circle
closeup
coil
concrete
construct
construction
curve
development
engineering
foundation
frame
framework
ground
heavy
industrial
industry
iron
israel
material
mesh
metal
metallic
net
pattern
pole
raw
rebar
reinforce
reinforcing
rod
rolled
round
site
skeleton
steel
strong
structure
support
welding
wire
work
wrought