文件名称:gps_trace_manaual
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GPS 个人跟踪器，对弱势人群非常重要，小学生 老年人 病人的监控是非常适合的，配合现代通信网络才使这成为可能-GPS personal tracking device to the disadvantaged groups is very important for students to monitor elderly patients is very suitable to meet the modern communications network to make this possible
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gps_trace_manaual.pdf