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系统可实现信息的逐级传输和系统的逐级控制,各个站点又具有独立的工作能力,因此系统的灵活性和可靠性将大大提高。
The system can realize the level-by-level transmission of information and the level-by-level control of the system, and each site has independent working capability. Therefore, the flexibility and reliability of the system will be greatly enhanced.