大型空间柔性结构是无穷维的分布式参数系统，理论上具有无穷多个振动模态。
Large space structures are infinite-dimensional distributed-parameter systems, which theoretically have infinite number of vibration modes.
空间大型环形可展天线具有展开口径大、质量轻、柔性大等特点，是一个典型的多柔体结构。
The large Hoop Truss Deployable Antenna (HTDA) in the space, with large aperture, light mass, big flexible character and so on, is type flexible multi-contact system.
智能结构技术对空间大型柔性结构的振动控制问题具有重要意义。
The technology of smart structures is significant for the vibration control of large flexible space structures.
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