The method can achieve fourth-grade leveling survey precision demand by precision analysis, and then brings forward some measure to increase observation precision.
通过精度分析，该方法可达到四等水准测量的精度，提出了提高观测精度的相应措施。
The method can achieve fourth-grade leveling survey precision demand by precision analysis, and then brings forward some measure to increase observation precision.
通过精度分析，该方法可达到四等水准测量的精度，提出了提高观测精度的相应措施。
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