英文關鍵字
above
aerial
aluminum
camera
carrier
center
chp
city
coal
crane
day
delivery
energy
fly
gas
gasoline
green
heat
hot
inspection
insulation
maintenance
many
motion
move
oil
petrol
pipe
plant
power
production
repair
served
several
side
spring
stainless
steel
summer
sun
supply
supports
technology
town
valve
view
water