具体实践中，有探索学习模式、自主学习模式、协同学习模式、案例教学模式和虚拟环境模式等五种模式。
In actual practice, it displays five patterns: learning exploration pattern, autonomous learning pattern, cooperative learning pattern, case teaching pattern and virtual environment pattern.
虚拟仪器系统的误差分析和修正方法的案例研究：讨论了虚拟式噪声分析仪、虚拟式心电分析仪的误差分析和修正。
It provides example for error analysis and modification of virtual instrument system. It discusses the error analysis and modification of virtual noise analyzer and virtual ECG analyzer.
通过引入一个虚拟决策单元，设计了交通运输项目改进DEA评价模型，并给出了评价案例。
By incorporating a fictitious DMU, this paper presents an improved model of DEA for transportation projects with an example.
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