英文關鍵字
business
chemical
condensate
condense
conduit
construction
cooling
coolness
cream
cylinder
dairy
detector
engine
factory
flange
food
forecastle
freezing
freon
huge
ice
incorrodible
indoors
industrial
industry
inside
iron
line
metal
metallic
pipe
pipeline
piping
plant
power
pressure
production
rivet
rustless
rustproof
sensor
shine
stainless
steel
tank
technology
tub
tube
valve
vat
works