In this paper, the concepts of star element and star ideals of a semi-ring are introduced.

本文引入了半环的星元素、星理想、星同余等概念，得到了半环的星同余的一些重要性质。

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Design calculation of dual semi-ring (DSR) high pressure vessel is introduced in this paper. It USES the method of stress analysis based on the theory of shells.

介绍了双合环高压容器的设计计算，它应用基于壳体理论的应力分析方法。

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First, semi ring of fractions of a semi ring about a multiplicative closed subset in it is constructed.

先构造交换半环关于其乘法封闭子集的分式半环；

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Nineteen years later, Mandy semi-survived, had three months clean, some fluorescent key-ring tags to prove it.

NEWYORKER: Deniers