propylene oxychlorination

例句：

1. 1.This process is used to produce propylene oxychlorination in the petrochemical industry.
   这个过程用于在石化工业中生产丙烯氧氯化。
2. 2. The propylene oxychlorination produced by this method has high purity and low cost.
   这种方法生产的丙烯氧氯化纯度高、成本低。
3. 3.Propylene oxychlorination is a key intermediate for producing polypropylene.
   丙烯氧氯化是生产聚丙烯的关键中间体。