Animal oil, vegetable oil, mineral oil, and oil decolorization, well-manufacturing petroleum products, synthetic organic catalysts, exhaust gas control (FGD), and so on...
动、植物油、矿物油等脱色，石油产品的精制，有机合成的催化剂，废气的治理(脱硫)等。
2
Due to shortage of petroleum and enhancement of exhaust emissions standard, the substitute fuel engine has become more and more important.
随着石油的不断短缺及排放标准的提高，代用燃料发动机越来越受到重视。
3
This paper analyzed the causes and influence factors of the jet noise emerged from petroleum and chemical plants, and investigated design methods and main technique cruces of exhaust mufflers.