结合工程实际，对广东某市GPS网的GPS高程和联测的几何水准采用多种拟合方式进行拟合。
With the engineering practice, the auhtor select some methods to deal with height fitting of a GPS control net of Guangdong province.
中海壳牌南海石化项目因工程建设的需要，在厂区范围内建立了四个永久性水准点作为场地高程控制网。
The four permanent benchmarks are built as the altitude control network in the place because of the requirement for the CSPC Nanhai petrochemical project's building.
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