tangent offset

• 切线支距,切线偏移,切线垂距

tangent offset的用法和样例：

例句

1. There are many methods to measure the circular curved line in circuitry construction survey.Angle offset method and tangent offset method are usually used.
   摘要在线路施工测量中，圆曲线测设方法有很多，通常采用偏角法或切线支距法。