英文關鍵字
machine
roll
equipment
factory
technology
industry
facility
manufacture
shaft
rotating
machinery
coil
mill
workshop
transmission
rotate
steel
roller
fast
production
plant
work
automated
install
paper
manufacturing
papermaking
product
conveyor
belt
transport
line
moving
metal
drum
maintenance
operate
recycle
rotary
environment
fibre
industrial
produce
ecology
closeup