Airdrop USES the same concept, working on the principle that even the driest air contains water molecules that can be extracted by lowering the air's temperature to the point of condensation.

Airdrop使用了相同的理念，它工作的原理是：即使最干燥的空气，空气中所含的水分也可以通过降低空气温度，达到凝结点来萃取。

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In this article, the basic principle of alkaline condensation reactions of furfural as well as their application in the synthesis of furan perfume are described.

本文论述了糠醛碱性缩合反应的基本原理和利用该反应合成呋喃类香料的具体应用，并对一些呋喃类香料的香气特征作了介绍。

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On the basis of practicing, the operational principle and features of dual condensation chamber used for drum water level measurement are presented in detail.

以实践为基础，对测量汽包水位中使用的双室平衡容器的工作原理与特性作了详细介绍。

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