It is divided into four major sections: Plate Tectonics, Earthquakes, GPS, and Space Technology at Work.
它被分为四个主要的部分：板块构造学，地震，全球定位系统和起作用的空间技术。
The work in this paper is aimed at validating the use of a GPS receiver different to orientation sensor in a vehicle guidance system.
把不同于定向传感器的GPS接收器应用在农用联合收获机的车辆导航系统中。
By this method, leveling and GPS-RTK survey can be carried out at the same time, which can increase work efficiency and reduce job time.
采用本文的方法，可使RTK平面和高程放样与水准测量工作同时进行，有利于提高作业效率，缩短工期。
By this method, leveling and GPS-RTK survey can be carried out at the same time, which can increase work efficiency and reduce job time.
采用本文的方法，可使RTK平面和高程放样与水准测量工作同时进行，有利于提高作业效率，缩短工期。
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