機器
area
asphalt
breakstone
bulldozer
closed
coarse
collection
compacted
composition
concept
concrete
decorative
design
dry
elements
emblem
equipment
excavator
fixing
flat
grained
ground
icons
illustration
isolated
layer
mesh
mix
mixer
object
pavement
paving
repair
road
roller
sand
set
sign
slab
specialists
stones
surface
symbol
technician
technology
truck
worker