By using the theory of common focus conic bundle, a kind of advantageous directness arithmetic about conic's focus is obtained, and an example is given.
利用共焦点二次曲线束的理论，得出了二次曲线的焦点的一种十分方便的直接算法，并给出了一个计算实例。
2
A practical combined adjustment program system based on the sophisticated bundle adjustment theory in photogrammetry is introduced.
本文介绍了一个以摄影测量光束法平差理论为基础的实用的联合平差程序系统。
3
In this paper a unified theory of supergravities is constructed by using the Fiber bundle technique and different types of supergravities can be considered as applications of this theory.