英文關鍵字
accuracy
air
arrow
background
bar
boiler
brewery
bright
closeup
compression
container
control
detail
device
dial
equipment
gage
gas
gauge
high
horizontal
indicate
indication
industrial
industry
instrument
isolated
machine
macro
manometer
measure
measurement
metal
meter
numbers
old
pipelines
pipes
pressure
russian
scale
silver
stainless
steam
steel
technical
technology
tool
vacuum
white