Bus IC card data mining system is the basic platform for obtaining the transit passenger OD.
公交IC卡数据挖掘系统是进行公交客流od获取的基础平台。
The mining scheme and new technology of sublevel filling method cemented by crushed stone and cement slurry, and the production linking up technique to transit from caving method to filling meth...
研究应用了分段碎石胶结充填采矿方法较好地解决了这一问题，介绍该采矿方案和碎？。
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