The refrigerant in a household refrigerator also undergoes a cyclic process. 家用冰箱的致冷剂，也经历循环过程。
These systems play a pivotal role in ensuring that recycled materials can be incorporated in the production cycle and reprocessed. 这些系统能提高回收料的纯度，保证其顺利进入再生产和再循环过程。
