The combined structures which are made of bar, beam, membrane, plate and shell elements are used broadly in engineering.
杆、梁、膜以及板壳等多单元组合结构被广泛地应用到工程实际当中。
Through years of researchers' persistent efforts, quite a number of plate and shell elements have been presented and many of them are excellent.
经过众多研究者数十年的努力，已经有为数可观的板壳单元出现，其中不少是品质优良的。
Through years of researchers' persistent efforts, quite a number of plate and shell elements have been presented and many of them are excellent.
经过众多研究者数十年的努力，已经有为数可观的板壳单元出现，其中不少是品质优良的。
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