vertical bending motion

例句：

1. 1. Thescientist observed the vertical bending motion ofthe beam during testing.
   科学家在测试期间观察了梁的垂直弯曲运动。
2. 2. Duringthe construction, the workers had to dealwith the vertical bending motion of thesteel beams.
   在施工过程中，工人们必须处理钢梁的垂直弯曲运动。
3. 3. The engineer designed a system to preventthe vertical bending motion of the beams during heavy loads.
   工程师设计了一个系统，以防止在重载下梁的垂直弯曲运动。