shot peening

例句：

1. 1. The company used shot peening to improve the quality of its products.
   该公司使用冲压加工来提高产品的质量。
2. 2. The engineer was shocked by the results of the shot peening test.
   工程师对冲压测试的结果感到震惊。
3. 3. The manufacturer claims that shot peening is a cost-effective way to produce parts.
   制造商声称，冲压是一种成本效益高的生产零件的方法。