文章研究了受初始静载荷作用下夹芯复合材料曲梁的面板的局部自由振动问题，并给出一种相应的理论分析方法。
A theoretical approach is provided to investigate the problem of local free vibration of an initially stressed curved sandwich beam in this paper.
确定了使下横条管夹弯曲的合理工艺流程。
A reasonable process for bending the pipe nip of the bottom crossband was determined.
在每个服务下，文件夹结构应该包括与图 6 所示类似的内容。
Under each service, the folder structure should include something similar to Figure 6.
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