英文關鍵字
business
circle
control
conveyor
cutting
engineering
equipment
factory
flat
heavy
industrial
industry
iron
large
line
lobnya
machine
manufacturing
metal
metallic
metallurgy
metalwork
modern
object
old
part
plant
plate
power
production
profil
roll
shape
shop
single
spiral
steel
technology
tool
traffic
train
wheel
work
worker
workshop
time
lapse
timelapse