英文關鍵字
aerial
carrier
construction
conveyor
damage
departure
dirty
drone
dump
dumper
dust
ecology
environment
environmental
equipment
factory
foundry
furnace
heap
heavy
hot
industrial
industry
iron
ironworks
landscape
large
loading
machinery
metal
metallurgical
metallurgy
mountain
ore
plants
product
production
quarry
reprocessing
slag
smelting
steelworks
technology
truck
vehicle
view
work
workshop