beam area

例句：

1. 1. The beam area of the roof is too small for the weight it needs to support.
   屋顶的梁面积太小，无法支撑它需要承受的重量。
2. 2.The engineer calculated the beam area and used it to design the bridge.
   工程师计算了梁面积，并据此设计了这座桥。
3. 3.The beam area is a critical factor in determining the strength of the structure.
   梁面积是决定结构强度的关键因素。