英文關鍵字
assembly
basic
box
bridge
carriage
carts
chain
coat
coil
cold
commercial
companies
complex
construction
conveyance
corporate
crane
day
department
depot
device
documentary
economy
editorial
electric
equipment
factory
galvanized
guild
hauling
heavy
hoist
hot
industrial
industry
interior
iron
light
machine
manufacturing
metal
metallurgical
metallurgy
modern
motion
move
old
overhead
pan
path
people
plant
platform
production
rail
railroad
rails
railway
retro
roll
room
runways
sawmill
shop
steel
still
technical
technology
transportation
trolley
truck
wheels
work
workshop
zinc