【摘要】 根据平面风网都有对偶风网的特点,本文引用对偶性原理,建立对偶变换,提出分支分离法。对已判别的平面风网,解决了它们的对偶风网的风向判别问题,扩大了风网的可判范围。更多还原

【Abstract】 There is a dual network for every planar network. According to the principle of duality, the paper presents the dual transformation and branch separation for identification of airflow di ection in ventilation networks. The separation of branches enables the planar networks which are identifiable by means of branch parallel transformation to have their dual networks equally identifiable by the same means of branch transformation and thus the identifiability of ventilation networks can be enlarged.更多还原