grain-boundary shape

例句：

1. 1. The grain boundary shape plays a crucial role in determining the texture of wheat flour.
   谷粒边界形状在决定小麦面粉的质地方面起着至关重要的作用。
2. 2.The grain boundary shape is an important factor in determining the quality of rice.
   谷粒边界形状是决定稻米质量的重要因素。
3. 3. The grain boundary shape can be used to identify different types of seeds and plants.
   谷粒边界形状可以用来识别不同类型的种子和植物。