bulk polymerization of ethylene

例句：

1. 1. Bulk polymerization is a processused to make plastics and other materials.
   大量聚合是一种用于制造塑料和其他材料的过程。
2. 2.The researchers conducted bulk polymerization experiments onthe new material.
   研究人员对这种新材料进行了大量聚合实验。
3. 3. Bulk polymerization has becomean important method for producing high-qualityplastics.
   大量聚合已成为生产高质量塑料的重要方法。