dullness area

例句：

1. 1. The research team found a significant increase in the dulinces area during the experiment.
   研究团队发现实验期间，迟钝区域显著增加。
2. 2. The scientist discovered that the dulinces area had been reduced by half due to the new treatment.
   科学家发现由于新治疗，迟钝区域减少了一半。
3. 3.The engineer designed an innovative system to reduce the dulinces area in the production line.
   工程师设计了一个创新系统来减少生产线上的迟钝区域。