geometrical cross section

例句：

1. 1. The engineer drew a geometricalcross section of the bridge.
   工程师绘制了这座桥的几何截面图。
2. 2. The scientistused a geometrical cross section to calculatethe weight of the object.
   科学家使用几何截面来计算物体的重量。
3. 3. The architect designed ageometrical cross section for the new building.
   建筑师为新建筑设计了一个几何截面。