機器
aluminum
arranging
black
business
chrome
construction
engineering
equipment
factory
ferrous
foundry
goods
heat
indoors
industrial
industry
inside
iron
line
machinery
manufacture
manufacturing
material
metal
metallic
metallurgical
metallurgy
mill
object
pile
pipe
pipeline
pipes
piping
production
products
quality
rollingmill
shape
shiny
stainless
steel
storage
technology
tube
tubes
tubing
warehouse
workshop