groove sample

例句：

1. 1. The engineer used a groove sample to test the material's strength.
   工程师使用凹槽样本来测试材料强度。
2. 2.The groove sample was crucial in determining the final design of the product.
   凹槽样本在确定产品最终设计中至关重要。
3. 3.The groove sample was used as a template for creating the final product.
   凹槽样本被用作创建最终产品的模板。