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回顾了定静压定温度法、定静压变温度法的控制机理和发展概况，详细阐述了变静压变温度法（ＶＰＴ）的构成和原理及其在节能、舒适、保证新风量等方面的特点，给出了这一方法在上海的两个应用实例。
The control mechanism and development of fixed static temperature method and static pressure change temperature method are reviewed. The composition and principle of variable static pressure change temperature method (VPT) are described in detail, and their energy saving, comfort, and fresh air supply are also discussed. The characteristics of this method are given in two application examples in Shanghai.