semi-group ring

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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The serious footdrop would occur if the lengthened amplitude exceeded 4 cm with semi-ring fixator.

半环形延长器延长超过4cm将产生严重的足下垂。

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Stress Analysis of Dual Semi-ring High Pressure Vessel

双合环高压容器应力分析

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Example all kinds of ball pens with famous brand: roller pens, fountain pens, pencils, semi-metallic pens, metallic pens, letter openers, pens with a key ring, straw-pen etc.

品种如万宝龙、派克、小西华的圆珠笔、水笔、钢笔、铅笔、半金属笔、金属笔、木柄放大镜、拆信刀、钥匙圈笔、草席笔等各种款式。

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Star Ideal of Semi-Ring

半环的星理想

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In this paper, a brief review of the theory of the measure extension is given in the first, then a new concept& weak semi-ring is introduced, and the measure extension on it is followed, which has generalized the Caratheodory measure extension theorem.

本文首先对测度扩张的理论做了一个简单总结，然后引进了一个新集类&弱半环，给出了其上的测度扩张定理，它推广了Caratheodory测度扩张定理。

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