hodograph plane

例句：

1. 1. The hodograph plane is used to measure the curvature of the earth'ssurface.
   霍达格平面仪用于测量地球表面曲率。
2. 2. The hodograph plane was invented by a scientist who wanted to study the shape of the earth.
   霍达格平面是由一位科学家发明的，他想研究地球的形状。
3. 3. The hodograph plane has been used in various fields, including geology and engineering.
   霍达格平面在地质学和工程学等多个领域都有应用。