The shell has to be slightly porous to enable oxygen to pass in.
外壳不得不有些细小的孔以便能使氧气通过。
2
Third Prize: Within the stacked volumes and light, porous and tall shell, the ecosystem, structure and functions of the tower have all been carefully considered.
第三名在叠叠量体与轻透挺立的外壳中，尊生态环境、结构行为、空间功能考虑深入。
3
Generally the numerical stimulation on flow field and temperature field of shell distance is based on porous medium model.