Adding a direction to an edge ultimately creates a so-called property graph which represents the explicit structure of data inside a graph database.
为边增加方向最终会创建一个属性图，它代表图形数据库中的明确结构。
This paper discusses and analyzes the accuracy problem of linear-resection points. At the same time, the property graph of point position error is given.
讨论与分析了测边后方交会点的精度问题，同时给出了点位误差特性曲线图。
Property queries are typically faster and return less information than graph queries.
属性查询通常比图表查询执行速度快，返回的信息相对较少。
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