短語(yǔ)詞組短語(yǔ)Crude benzol refining 粗苯精制coking crude benzol 焦化粗苯crude benzol production 粗苯生産crude benzol tank 粗苯罐crude benzol refining techniques 粗苯精制技術(shù)crude benzol rectifier 兩苯塔content of crude benzol 粗苯含量crude benzol distillation 粗苯蒸餾crude benzol distillation system 粗苯蒸餾系統(tǒng) 返回 crude benzol