biorthogonal sets of functions

• 双正交函数集

biorthogonal sets of functions的用法和样例：

例句

1. In the proposed modeling method, the state function set for the guide sign items is determined through calculation of the feature functions of intersections.
   基于交叉口特征函数集的指路标志建模方法是通过交叉口特征函数的运算确定路标指示项的状态函数集。