Based on the CDMA2000 1X terminal tetechnology, this paper analyzes and designs the key digital trunking technology and protocols, and make deep research on the terminal digital trunking tetechnology.
本文以CDMA2000 1X终端技术为基础，对数字集群关键技术和协议进行分析和设计，对终端的集群实现进行了深入研究。
It is necessary to make a deep research in the environmental planning and management of the Reservoir.
因此，有必要对水利枢纽环境管理与规划的问题进行深入研究和探讨。
Pressure hull of deep-submarine is an important equipment, which make the survival at deep-sea access to people, so pressure hull's research is of great significance.
潜水器的耐压壳体是保障人员，能够在海底生存的重要设备，所以潜水器的耐压壳体的研究具有重要的意义。
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