本文借助于模论中的方法，在中心S-系范畴中，给出了上生成子的若干刻画。
In the central S-act category, some equivalent conditions for a cogenerator are given.
同时对盟定义了盟模，并证明了对部分半群g，所有G -盟作成的范畴与所有G -分次环作成的范畴是同构的。
It is proved that for a partial semigroup g, the category of G-unions and the category of G-graded rings are isomorphic.
其压模范围覆盖了周代诗乐舞诸范畴，形成了汉语四言结构的“绝对压模”时代。
Its molding influence covered poetry, music and dance during the Zhou Dynasty, a period of "absolute molding" of the four-character structure of Chinese.
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