地理信息历史数据
geomatics historical data
历史数据保存
storage of history data P
历史数据报告存储与检索单元
Historical storage & retrieval unit
历史数据基线
Based on historical data as baseline
历史数据库优化
history database optimization
历史数据曲线显示
historical data curve display
历史数据推理
historical data reasoning
历史数据整理
historical data reorganization
sorting-out of historical data