cross section area

例句：

1. 1.The engineer calculated the cross section area of the beam to determine its strength.
   工程师计算了梁的横截面面积以确定其强度。
2. 2.The construction company used a laser scanner to measure the cross section area of the building.
   建筑公司使用激光扫描仪测量建筑物的横截面面积。
3. 3. The scientist measured the cross section area of the sample to ensure it met the required standards.
   科学家测量了样本的横截面面积以确保它符合所需的标准。