Rockwell A scale

例句：

1. 1. The geologist is studying the rocks in the area.
   地质学家正在研究该地区的岩石。
2. 2. Rockwell's work on the new model car has been praised by many experts.
   罗克韦尔对新款汽车的研究得到了许多专家的赞扬。
3. 3.The company's success can be attributed to its strong Rockwell brand.
   该公司的成功可以归因于其强大的Rockwell品牌。