stress concentration

例句：

1. 1. The engineer needs to concentrate on the design of the new machine.
   工程师需要集中精力设计新机器。
2. 2. The team's performance was greatly affected by the stress concentration in their work environment.
   团队的表现受到了工作环境中压力集中的影响。
3. 3. Stress concentration is a significant factor in the development of many diseases.
   应力集中是许多疾病发展的一个重要因素。