Based on the analysis of transport stream, program stream of MPEG-2 standard definition, this paper gives the principle and the plan for transforming the transport stream to VOB files.
本文在分析MPEG 2标准定义的传送流、节目流的基础上，给出了将传送流转换成视频目标文件的原理和方法。
Thus, we need to further research the environment standard basic theory, its definition, legal nature, legal significance and formulation principle.
因而需要对环境标准的定义、法律性质、法律意义、制定原则等基础理论问题加以认真探讨。
Based on IEEE standard and domestic and overseas engineering practice, the fallback system is studied in detail. The definition, function, operational principle and design specification are presented.
本文在结合IEEE标准以及国内外的工程实践的基础上，对后备系统进行了深入地研究，给出了后备系统的定义、功能、工作原理、设计要求。
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