蒸汽精制的沥青
A new process for producing roofing asphalt from petroleum residua by steam cracking and condensation has been studied in the laboratory.
在实验室中研究了一种从石油残渣油制取建筑沥青的新工艺&水蒸汽裂解缩合。
A new process for producing roofing asphalt by steam cracking and condensation
建筑沥青生产新工艺&渣油过热水蒸汽裂解缩合
英语网 · 双语娱乐资讯
英语网 · 双语新闻