英文關鍵字
steel
circle
rotate
big
white
huge
drum
labels
factory
appear
automation
beverage
business
clean
commercial
complicated
container
conveyor
dairy
drink
engineering
food
handle
industrial
liquid
mechanical
mechanism
metal
milk
moves
plant
plastic
pour
precision
pressure
process
produce
product
roll
scroll
silver
stainless
sterilized
storage
tank
technology
transportation
wet
work