Use cases are one way to document functional requirements, and can lead to more thorough system designs and test procedures.

用例是一种用文档证明功能性需求的方法，而且还可以导致更多彻底的系统设计和测试步骤。

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With theory analysis, experiment research and spot test, this paper takes the lead in establishing technology system of gob-side entry retaining with large section or small one.

通过理论分析、实验研究和现场试验，本文率先在国内初步建立了由大断面、小断面沿空留巷组成的综放沿空留巷技术体系。

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The helium cooling system is an important ancillary system of the dual-functional lithium lead test blanket module(DFLL-TBM) for ITER.

氦气冷却系统是ITER中国液态锂铅实验包层模块（DFLL-TBM）在ITER装置内进行实验的重要辅助系统。

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