• 1. principal element analysis: 主元分析
• 2. refined principal-element analysis model: 改进型主成分分析模型

• 1.The synthetical model of safety comprehensive evaluation for air traffic control was established in the employ of principal element analysis method.
  介绍了舰艇救生通道优化设计中综合安全评估的方法和步骤，着重考虑了人为因素对系统影响的不确定性。
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• 2.Slice method and finite element method are principal methods of soil slope stability analysis.
  条分法和有限元法是土质边坡稳定分析的主要方法。
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