Data for: Vibration characteristics of Cylindrical Shell filled with Fluid based on first order shell theory

In the file, fixed length is the data of the section 'Effect of thickness' and fixed thickness is the data of the section 'Effect of length' .本文件中，固定长度（fixed length）对应于"厚度的影响"（Effect of thickness）章节的数据，固定厚度（fixed thickness）则对应于"长度的影响"（Effect of length）章节的数据。