oblique ionogram

例句：

1. 1. The oblique ionogram is a tool used to measure theangle of an object's projection ona screen.
   斜投影仪是一种用于测量物体在屏幕上投影角度的工具。
2. 2. The obliqueionogram was used to analyze thedata collected from the experiment.
   斜投影仪被用来分析实验收集的数据。
3. 3. The obliqueionogram helped us to understand therelationship between the two objects.
   斜投影仪帮助我们理解两个物体之间的关系。