But there are also many tricks hiding technical elements, starting with the countless air conditioning ducts, unsightly but oh so essential in Riyadh where differences in temperature are extreme.

但是仍然有很多技巧隐藏着技术性的元素，以无数的空调管道为例，虽然不雅观，但是在利雅得，这个不同极端天气存在的地方，却显得极为必要。

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Experimental research and the technical and economic analysis of thermal storage air conditioning has important theoretical value and practical signification.

对蓄冷空调技术进行技术经济分析与应用论证具有重要的理论价值和现实意义。

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The paper describes the principle and technical key of communication data network for air conditioning automatic control systems.

本文介绍了空调自控数据通讯网络的结构原理和构成网络的技术关键。

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