英文關鍵字
asphalt
automatic
base
build
concept
concrete
construction
cover
detail
duty
engineering
equipment
even
flatten
ground
heavy
highway
lay
layer
level
machine
machinery
maintenance
mass
material
mechanical
mechanism
motorized
motorway
move
movement
operation
part
pavement
paver
paving
process
road
roadbed
roadway
roadwork
screed
slipform
spread
spreader
subbase
surface
vehicle
view
work