The major component of concentration is the ability to focus ones attention on the task at hand and thereby not to be disturbed or affected by irrelevant external and internal stimulus.

专注主要是指把注意力集中于即将到来的任务，而不受不相关的内部或外部刺激所干扰和影响。

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Every principle component is the linear combination of the original variables and is irrelevant to each other. The spectra data can be stored and dealt with computer by reducing…

每一个主成分都是原始变量的线性组合，主成分之间互为正交关系，在剔除冗余信息的同时，通过主成分分析的降维，解决光谱数据的存储和处理问题。

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