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介绍了一种以单片机为核心的交流电梯调速控制系统的设计．该设计对老式继电控制电梯的改造及国产微机控制电梯的生产具有一定意义
2. This paper introduces the design of AC elevator speed control system based on SCM. The design has certain significance for the transformation of the old relay control elevator and the domestic microcomputer control elevator production.