英文關鍵字
agricultural
ammonia
burn
chemicals
chimney
co2
construction
dioxide
distillery
ecology
emissions
environment
explode
explosion
factory
farm
fertilizer
fire
flame
flare
fumes
gas
hot
industry
iron
manufacturing
metal
modern
monoxide
nitric
oil
petroleum
pipes
plant
pollution
production
refinery
rig
smoke
stack
steel
torch
tower
toxic
tube
unit
vapor
warm
workshop