機器
abstract
architecture
asphalt
block
brick
brickwork
built
business
cobble
cobblestone
concrete
construction
conveyor
development
engineering
equipment
flag
flagstone
footpath
gray
grey
industrial
industry
layer
machinery
masonry
material
mechanic
mechanical
outdoor
paved
pavement
paver
paving
road
roadway
rock
sidewalk
site
slab
stacker
stone
street
technical
technological
transportation
walkway
work