英文關鍵字
background
boiler
chemistry
cistern
compress
cooling
dairy
depth
duct
energy
engineering
enterprise
factory
filter
filtering
focus
food
industry
machine
manometer
manufacturing
milk
mill
modern
nobody
oil
pasteurization
pipe
pipeline
piping
plant
power
pressure
pump
refrigeration
shiny
stainless
steel
system
tank
technology
transportation
tube
undertaking
vat
workshop