effective depth of slab

例句：

1. 1.The engineer calculated the effective depth of the slab to ensure its stability.
   工程师计算了板的有效深度以确保其稳定性。
2. 2.The construction company used a high-quality material for the effective depth of the slab.
   建筑公司使用高质量的材料来制作板的有效深度。
3. 3. The engineer analyzed the data to determine the effective depth of the slab.
   工程师分析了数据以确定板的有效深度。