英文關鍵字
and
bolt
brown
conduit
connection
control
drain
engineering
equipment
faucet
fuel
gasoline
hand
hydrant
industrial
industry
machine
metal
milling
object
off
oil
old
open
petroleum
pipe
pipeline
pump
red
rice
sewer
sewerage
shape
steel
stop
stopcock
stream
system
tap
thailand
tube
turn
valve
water