③ The conception of difference data has been brought forward. At the same time, the program has been designed to ensure the facticity, real-time and integrality of the data that were transported in network.
③ 提出了差分数据的概念，并通过程序设计实现对数据库数据完整性的约束，保证前台和后台的双向传输数据的正确性。
参考来源 - 智能化商业信息管理技术的研究和系统的开发·2,447,543篇论文数据，部分数据来源于NoteExpress
差分数据传输是RTK技术实现的关键。
The differential data transmission is the key point in RTK technic.
差分数据传输是实现RTK技术的关键。
利用CD MA无线数据传输技术传送gps差分数据可以扩大测区范围，实现高精度实时动态定位。
We can enlarge the range of mapping region by utilizing CDMA wireless data transmission in transporting GPS difference data, and realize high precision orientation of real time.
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