HFCS类制冷剂的挑战 在众多R22的替代品中，HFCS类制冷剂表现出色，然而，其依然存在一定的GWP值，无法完全满足环保的需求。以R407C为例，它的热力性质与R22相近，能够有效地实现设备升级。然而，使用R407C后，制冷量与能效比有所降低，而且其温度滑移较大 ...

The P/B ratio shows how a stock's market price compares to its book value. It helps gauge whether a stock is undervalued or overvalued relative to its net assets.

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Article subjects are automatically applied from the ACS Subject Taxonomy and describe the scientific concepts and themes of the article. Micro/nanostructured surfaces can also enhance boiling ...