This offers a theoretical ground for setting the region of projection and constructing accurately the lines of intersection.

它为确定截交线的投影范围，准确地绘制截交线，提供了理论依据。

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Chapter two and three lay a theoretical ground for the real-time processing of video bitstream, and in the sequel, the implementation of video bitstream processing is studied in detail.

第二、三章是为视频流实时处理提供理论基础，后续章节主要研究压缩码流处理的实现。

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On the ground of principle of virtual work, this paper put a new theoretical meth - od to solve question of balance by constrained equation.

本文在虚功原理的基础上，提出了一种利用约束方程求解平衡问题的新理论方法。

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Given our dependence on the communication systems of our planet, both satellite- and ground-based, this is not simply a theoretical worry.

CNN: Four ways the Internet could go down