建立连接并验证角色和分析阶段中确定的（或者可能是反向工程）实际系统参与者之间的关系是有用的。
This is useful to make a linkage and validate the relations between the Personas and the actual system actors that are determined (or possibly reverse-engineered) during the analysis phase.
通过调查研究，提出了煤层顶板工程地质分类方案，此方案简单易行，验证可靠，适用于煤田勘探阶段。
Based on the investigation and research, a new plan of engineering geology classification is put forward. The plan is easy and reliable, suitable to the exploration stage.
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