英文關鍵字
bio
building
clean
cleaning
ecology
engineering
environment
equipment
faucet
filter
filtering
filtration
gauge
huge
indoors
industrial
industry
interior
iron
laboratory
line
machine
machinery
metal
microfiltration
modern
new
pipe
pipeline
piping
plant
preparation
pressure
process
processing
purification
purified
sludge
steel
storage
store
structure
system
tank
technology
treatment
tube
valve
view
water