Fixed platen with hollow spherical structure ensures the lifetime.

空芯球面结构头模板，能确保模板使用寿命。

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Spherical structure at the tail effectively reduces the material remainder in the machine.

该设备结构简单，体积小、密封性能好，结构合理；

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The formation of the hollow spherical structure was interpreted in terms of the core-shell mechanism.

利用核-壳机理初步解释了空心球结构的形成过程。

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It's no longer just a round spherical mass of cells, but it has some structure.

不再只是一个球状的细胞团,它有了一定的结构

耶鲁公开课 - 生物医学工程探索课程节选

Other facilities include a small children's library, exhibition spaces, lecture halls, a school for information sciences and a planetarium, this last being a separate, spherical structure poised at one end of the vast outside plaza like an orbiting satellite.

ECONOMIST: Runes among the ruins