wave-vector surface

例句：

1. 1.The wave-vector surface of the crystal is very smooth.
   晶体的波矢面非常光滑。
2. 2.The wave-vector surface of the crystal is used to determine its shape.
   晶体的波矢面用于确定其形状。
3. 3.The wave-vector surface of the crystal can be used to study its internal structure.
   晶体的波矢面可以用来研究其内部结构。