英文關鍵字
ambient
atmosphere
cardan
detail
engineering
equipment
factory
heavy
industry
iron
job
machine
machinery
manufactory
manufacture
metal
metallic
metallurgy
object
pipe
plant
rolling
rotating
shaft
sparks
steel
technology
work
worker
workshop
英文關鍵字
ambient
atmosphere
cardan
detail
engineering
equipment
factory
heavy
industry
iron
job
machine
machinery
manufactory
manufacture
metal
metallic
metallurgy
object
pipe
plant
rolling
rotating
shaft
sparks
steel
technology
work
worker
workshop