conic scale

例句：

1. 1. The architect designed a new building with a conic scale of 3:1.
   建筑师设计了一座新建筑，其圆锥形比例尺为3:1。
2. 2. The surveyor used a conic scale to measure the distance between two points.
   测量员使用圆锥形比例尺测量两点之间的距离。
3. 3. The engineer calculated the volume of the cone using the conic scale.
   工程师使用圆锥形比例尺计算锥体的体积。