英文關鍵字
chemical
factory
production
workshop
industrial
technology
equipment
manufacturing
chemistry
engineering
system
process
plant
tank
ground
huge
empty
bridge
large
reservoir
material
biochemical
fertilizer
machine
pipeline
cycle
service
stainless
product
pipe
reaction
metal
refinery
distillation
power
tube
pressure
medical
pharmaceutical
science
complex
barrel
treatment