Preserving accuracy when using a 2-d map requires understanding spatial referencesystems and using them appropriately.
使用2 - d地图时保持精确度需要理解空间引用系统并合理使用。
2
These models will provide referencesystems, experiment systems and IP flow processing scenarios for future studies.
这两个参考模型将为集群路由器的后续研究提供参照系统、实验系统和IP流处理场景。
3
It is necessary to unify different geodetic referencesystems in order to realize comprehensive utilization of surveying achievement in different systems.