英文關鍵字
building
bunch
bundle
capping
cast
commercial
concrete
construct
construction
container
corrosion
crane
docks
durable
equipment
factory
ferrous
fitting
fittings
framework
fret
fusing
heavy
industrial
industry
loading
machine
manufacture
metal
metallurgy
mountings
pile
port
products
rail
reinforcement
rough
steel
structure
terminals
transport
transportation
unloading
warehouse