这就是所谓的催化裂化.It is known as catalytic cracking.裂化是使较重的低挥发性的碳氢化合物分裂成较小分子的化学分裂.Cracking involves the chemical breakdown of higher, less volatile hydrocarbons into smaller molecules.FCC(流化催化裂化 ) 是炼厂生产汽油的主要方法之一.The Fluid Catal...
The Volga River and the Ural River discharge into the Caspian Sea.伏尔加河以及乌拉尔河都有流入里海.Potentially huge oil also lie underneath the Caspian Sea.在里海的底部存在了巨大的石油能源.Trufflehunter is one of the key animal roles in Prince Caspian....