subway operation service hotline system
subway operation service hotline system
地铁运营服务热线系统
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Combining with the characteristic of Nanjing subway operation, it was analyzed the requirement of the System, designed and implemented Nanjing subway operation Service Hotline System.
结合南京地铁运营的特点，分析系统需求，设计并实现了南京地铁运营服务热线系统。
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