There are many methods to measure the circular curved line in circuitry construction survey. Angle offset method and tangent offset method are usually used.
在线路施工测量中，圆曲线测设方法有很多，通常采用偏角法或切线支距法。
This paper introduces the theory and its application of the curvilinear guided survey methods in concealed excavation of tunnels, such as chord offset method and tangent offset method.
介绍暗挖隧道曲线导向测量方法——弦线支距法和切弦线支距法的原理及应用。
On regular highway reconnaissance work the tangent offset method is the most common one on highway route center stake layout but this method is limited because of route tangent as baseline for offset.
在公路常规勘测设计工作中，切线支距法是一种常用的中桩放样方法，但该方法以路线切线为基线，使用条件受到限制。
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