Its theory support is matter-element and extension set, and its logical cell is matter-element.

它的理论支柱是物元理论和可拓集合理论，其逻辑细胞则是物元。

youdao

Its theory support is matter-element and extension set, and its logical cell is matter-element.

它的理论支柱是物元理论和可拓集合理论，其逻辑细胞则是物元。

youdao