The refrigerant in a household refrigerator also undergoes a cyclic process. 家用冰箱的致冷劑，也經歷循環過程。
These systems play a pivotal role in ensuring that recycled materials can be incorporated in the production cycle and reprocessed. 這些系統能提高回收料的純度，保證其順利進入再生產和再循環過程。
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