vertical traverse crank 垂直运动摇把
trigonometric vertical traverse 三角高程导线
The connected-triangle plan been applicable to the city underground project and its precision were analyzed. The vertical traverse plan and its optimization were analyzed in theory.
分析了联系测量各因素对方位角传递的影响;对适用于城市地下工程的联系三角形的布设方案和精度进行了分析;对竖直导线定向法的布设和优化进行了理论分析。
参考来源 - 城市地下工程定向测量及监测技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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