propylene oxidation

例句：

1. 1. The process of propyleneoxidation is crucial for theproduction of polypropylene.
   丙烯氧化过程对于生产聚丙烯至关重要。
2. 2. The propylene oxidation process produces ahigh-density polypropylene that is widely used in various applications.
   丙烯氧化过程产生的高密度聚丙烯广泛应用于各种应用中。
3. 3. The propylene oxidation process is an essential step inthe production of polypropylene,as it converts propylene intoa more useful polymer.
   丙烯氧化过程是生产聚丙烯的关键环节，因为它将丙烯转化为更有用的聚合物。