Slewing bearing is the "joint" of a machine.To utilize automatic recognition technology to trace and collect the statistics of product producing process can meet the needs of product traceability and increase product counterfeiting difficulty.%重工机械零部件回转支承是机械的＂关节＂,利用自动识别技术对产品生产流程进行跟踪和数据采集,满足产品可追溯性的需要,增加产品伪造难度。
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