英文關鍵字
bacteria
big
bio
building
chemical
chlorine
construction
dry
ecology
equipment
factory
filter
flocculation
fuel
gas
generator
huge
indoor
industrial
industry
machine
metal
natural
oil
organic
panorama
petroleum
pipe
pipeline
piping
plant
pollution
power
process
purification
purified
reservoir
sedimentation
steel
storage
store
structure
tank
technology
tool
treatment
tube
water