roof flaking ratio

例句：

1. 1.The roof flaking ratio of the building is an important factor in its durability.
   建筑的屋顶剥落比例是其耐久性的一个重要因素。
2. 2. The manufacturer has to monitor the roof flaking ratio to ensure product quality.
   制造商必须监控屋顶剥落比例以确保产品质量。
3. 3. The roof flaking ratio is measured by comparing the amount of material lost from the roof to the total area of the roof.
   屋顶剥落比例是通过将屋顶上损失的材料量与屋顶总面积进行比较来测量的。