The original building condition has a core column and several semi-oval blocks which essentially disorganized the space.
原场地中有个巨大的核心柱和一些圆形半柱，空间零碎。
2
The forming recesses (1, 3) of a lower die (2) and an upper die (4) are formed to have a semi-oval profile so as to provide a forming space S almost oval in section with the dies closed.