英文關鍵字
air
bar
black
blue
compression
compressor
cylinder
electric
electrical
engine
equipment
factory
flow
flowing
food
gauge
ice
industrial
industry
installation
intake
machine
manometer
manufacture
manufacturing
metal
metallic
motor
new
oxygen
pipe
power
pressure
professional
pump
red
spare
stainless
steel
system
tank
tap
technology
tool
tube
twist
valve
work
workshop