英文關鍵字
equipment
factory
fire
flame
heavy
hot
industrial
industry
iron
line
machine
machinery
manufacturing
metal
metallurgical
metallurgy
pipe
pipeline
process
product
production
red
rolled
steel
technology
tube
working
英文關鍵字
equipment
factory
fire
flame
heavy
hot
industrial
industry
iron
line
machine
machinery
manufacturing
metal
metallurgical
metallurgy
pipe
pipeline
process
product
production
red
rolled
steel
technology
tube
working