normal relief angle

例句：

1. 1. The engineer calculatedthe normal relief angle of the bridge toensure its stability.
   工程师计算了桥梁的正常减压角度，以确保其稳定性。
2. 2. During the constructionphase, it's crucial to maintaina normal relief angle to prevent structural failure.
   在施工阶段，保持正常的减压角度至关重要，以防止结构失败。
3. 3. The designof the building incorporatesa normal relief angle to optimizeenergy efficiency.
   建筑设计中包含了一个正常的减压角度，以优化能源效率。