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- nonlinear principal symbol 主部非线性
- Nonlinear principal axis mapping (NPAM) method is proposed to express high-dimensional design space in two or three dimensional space. 摘要为在二维或三维空间中表达固体火箭发动机高维设计空间，引入非线性主轴降维映射法对多维非线性设计优化问题进行降维处理。
- The principal symbols are Victory, Fraternity and Universality. 主要标志的含义是胜利、博爱、普遍性。
- A novel method is proposed in developing soft sensor based on the nonlinear principal components obtained from kernel principal component analysis (PCA) technique to deal with the nonlinear characteristics of data. 摘要提出了基于核函数主元分析(PCA)方法提取变量的特徵信息以有效处理非线性数据，并在此基础上进行软测量建模的方法。
- nonlinear principal component analysis 非线性主元分析
- nonlinear principal component analysis(NPCA) 非线性主成分分析
- nonlinear principal component analysis ( NLPCA ) 非线性主成分分析（NLPCA）
- The chemical symbol for copper is "Cu". 铜的化学符号是Cu。
- On maps, a cross is the symbol for a church. 在地图上，十字符号代表教堂。
- My wages are the principal source of my income. 薪金是我收入的主要来源。
- The principal shareholder ask for a meeting. 主要股东们要求召开会议。
- The agent spoke on behalf of his principal. 代理人代表他的委托人说话。
- Cypress branches used as a symbol of mourning. 柏枝作为悲哀象征的柏树枝
- Keys are available on application to the principal. 向校长申请就可得到钥匙。
- We use x as the symbol for an unknown quantity. 我们用x表示一个未知数。
- The white bird is a symbol of freedom. 这白色的鸟是自由的象徵。
- The Cross is the symbol of Christianity. 十字架是基督教的象征。
- She's been downgraded (from principal) to deputy. 她已(从校长)降为副校长。
- The lion is the symbol of courage. 狮子是勇武的象徵。
- Our principal problem is lack of time. 我们的主要问题就是缺少时间。
