主成分回归以其能够有效的降低维数，克服回归问题中的自变量高度相关而产生的分析困难，而得到广泛的利用。

PCR (principal component regress) that with the characters of reducing dimensions effectively and overcoming the intense relativity between independent variables, is widely used in different fields.

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随着半导体器件参数的增加，目标函数的自变量空间维数变得越来越大。

With the increase of the number of parameters in semiconductor devices, the dimensions of space in which the object function exists become larger and larger.

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自变量本身为函数的一数函数。

Argument is a term that denotes what a function is a function of.

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自变量本身为函数的一数函数。

Argument is a term that denotes what a function is a function of.

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