機器
agribusiness
air
background
baking
biofuel
bread plant
business
condensation
connection
container
conveyor
cylinder
energy
equipment
factory
food
fuel
gas
heat
heavy
indoors
industry
machinery
metal
metallic
modern
nobody
part
pipe
pipeline
plant
power
preparation
processing
reservoir
row
shiny
steel
storage
tank
technology
temperature
transporter
tube
vacuum
valve
wheat
whole