This dissertation works on the pre-theoretical research and technical exploration with SINS /GPS embedded integrated navigation system, which based on the pseudo-range and pseudo-range rate.
本文针对基于伪距、伪距率的SINS/GPS嵌入式组合导航系统，开展了前期理论研究和技术探索。
2
It may be that I'm wasting my time trying to establish a theoretical basis for it when in fact it originates in a pretheoretical zone.
可能是因为，我浪费时间试着为这种痛苦建立一种理论基础，而事实上，它却产生一个前理论区域。
3
This makes the evaluation of mine safety to be established on a rational theoretical basis, in which the relative risk index could be adopted directly as the pre-warning index of mine risk.