绿色倡导者称冰箱或干冰都是容易渗入水系统中的甲醛的很好替代物。
Green campaigners say refrigeration or dry ice is a good alternative to formaldehyde, which can seep into the water system.
本文的结论为干冰冰箱的优化设计制作和整机研究奠定了实验和理论基础。
The thesis lays a experimental and theoretical foundation for the optimal design and the whole machine study of dry ice refrigerator.
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