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《Beijing Surveying and Mapping》 2011-01
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Trigonometric vertical distancemeasurement analysis by the method of freedom setting station

Wang Hui chao SUN Ying  
This paper elaborated the height measurement by the method of freedoms station at the midway and accuracy,and had proven this method can meet the requirements of three-order leveling precision and precision request under the definite condition,Specially suit the height measurement,such as mountain area superhighway and railroad...etc.control diagraph.
【CateGory Index】: P224.2
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