Here's how it works. On every U.S. dollar bill in circulation is a 10- or 11-digit serial code that is unique to that bill.

看看它的工作原理：在市面上流通的每张美元钞票上，都有一个10位或11位的唯一的序列码。

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They are the natural circulation flow analysis code (MC-FLOW), the core thermal hydraulic analysis code (MC-THAS) and the pulsed reactor transient analysis code (MC-TRAN).

它包括脉冲堆自然循环分析程序（MC-FLOW）、堆芯热工水力分析程序（MC-THAS）和脉冲堆瞬态分析程序（MC-TRAN）。

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Finally, this paper put forward the method to optimize code: write code on the basis of superscale, dispose the memory rationally, adopt circulation-expand technology, simplify the algorithms, etc.

最后，本文提出了进一步优化的思路：基于超标量思想对算法进行优化，合理配置内存，采用循环展开技术，简化算法等。

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Finally, this paper put forward the method to optimize code: write code on the basis of superscale, dispose the memory rationally, adopt circulation-expand technology, simplify the algorithms, etc.

最后，本文提出了进一步优化的思路：基于超标量思想对算法进行优化，合理配置内存，采用循环展开技术，简化算法等。

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