X-ray topography

例句：

1. 1.X-ray topographers use the technique to map the terrain of a region.
   X射线地形学家使用这种方法来绘制一个地区的地形。
2. 2. The team used X-ray topographers to study the geological structure of the area.
   该团队使用X射线地形学家来研究该地区的地质结构。
3. 3.The X-ray topographers revealed that there were hidden caves beneath the surface.
   X射线地形学家揭示了地表下隐藏着的洞穴。