英文關鍵字
aggregate
building
civil
concrete
construction
control
controls
cover
detail
dump
dumper
engineering
filled
full
hand
haulage
hauling
hessian
industrial
industry
infrastructure
job
level
load
loaded
loader
loose
man
manual
material
mixer
occupation
operating
operative
person
protection
removal
safety
site
tarp
tarpaulin
top
truck
using
vehicle
waste
work