roof caving angle

例句：

1. 1. The roof caving angle of the building is too steep, which makes it difficult for people to enter.
   这座建筑的屋顶塌陷角度太陡，人们很难进入。
2. 2. The roof caving angle was measured by a professional surveyor to ensure safety during construction.
   施工期间，专业测量师通过测量屋顶塌陷角度来确保安全。
3. 3. The roof caving angle is an important factor in determining the structural integrity of a building.
   屋顶塌陷角度是判断建筑物结构完整性的一个重要因素。