[{"title":"( 3 个子文件 34.26MB ) jt/t808和jt/t809的2019版本","children":[{"title":"jt/t808-2013道路运输车辆卫星定位系统北斗兼容车载终端通讯协议技术规范_网络下载.pdf <span style='color:#111;'> 689.87KB </span>","children":null,"spread":false},{"title":"JT∕T 809-2019 道路运输车辆卫星定位系统平台数据交换.pdf <span style='color:#111;'> 32.63MB </span>","children":null,"spread":false},{"title":"JTT 808-2019.PDF <span style='color:#111;'> 3.27MB </span>","children":null,"spread":false}],"spread":true}]