Similar to the building of topological Spaces through the calculation of a closure of set, the topological Spaces can also be built through the derived set calculation.

又类似于从闭包运算出发建立拓扑空间，从而得到了从导集运算出发建立的拓扑空间。

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We derived a set of mathematical formulas for describing the third-order nonlinear optical process in polydiacetylene crystals.

我们建立了一套描述聚丁二炔晶体中的三阶非线性光学过程的数学公式。

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The input and output pin types are not generally set, because these can be derived from the corresponding parameter.

输入与输出帧类型通常不会得到设置，因为可以从相应的参数中得到它们。

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The data set for Figure 1 was derived from the Ken French Data Library.

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