The paper focuses on the introduction of modelling of the core and reflector. The core description is simplified by using repetition structure function of MCNP.

着重介绍堆芯和反射层的建模，利用MCNP程序的重复结构功能简化对堆芯的描述。

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The advanced techniques will help them structure their requirements in a way that maximizes understandability of their use cases, and reduces repetition in use-case writing.

高级技术将帮助他们按照一种最大化用例可理解性的方式来结构化他们的需求，并在用例编写方面减少重复。

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Maintaining your code structure in such a way that reduces repetition, is better organized, and is easier to read and maintain.

以能够减少重复、更具组织性、更易于读取和维护的方式维护您的代码结构。

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Unlike traditional song structure that is based on repeating things and not quite repeating things and suspending the repetition of things, Girl Talk compositions are rivers that move on.

FORBES: Girl Talk's Gregg Gillis On Copyright, Curation and Making Mashups Rhyme