英文關鍵字
vertical
reels
shot
technology
product
indoors
heap
food
white
crumbly
vapor
rotate
rollers
manufacture
fumes
agriculture
beet
conveyor
engineering
equipment
factory
industrial
industry
job
machinery
mechanical
plant
processing
production
steam
movement
cycle
quality
crystal
rotation
dynamics
periodicity
period
centrifuge
sugar
loading
unloading
pour
temperature
hot
work
sweet