coupled longitudinal vibration

例句：

1. 1. The coupledlongitudinal vibration of the structureis a critical factor in its stability.
   结构中的耦合纵向振动是其稳定性的关键因素。
2. 2.The engineers carefully designed the coupling longitudinal vibration to ensure the smoothoperation of the machine.
   工程师们仔细设计了耦合纵向振动，以确保机器的平稳运行。
3. 3. In the study of structural dynamics,understanding the coupled longitudinal vibrationis crucial for predicting and analyzing thebehavior of structures.
   在结构动力学研究中，理解耦合纵向振动对于预测和分析结构的行为至关重要。