英文關鍵字
building
metallic
framework
symbol
selfframing
house
metal
material
frame
bridge
construction
industry
factory
production
machine
equipment
stage
foundation
modern
garage
part
barn
roof
layer
industrial
list
structure
roll
architecture
business
exterior
steel
technology
tool
girder
commercial
framing
job
iron
warehouse
engineering
icon
motion
graphic
animation
pictogram
hd
animated
item
color