The data compressing method based on constant grade makes use of permutation and combination theory.
常数级压缩方法利用排列组合原理，适于压缩字节内容无规律的文件。
In these pictures, besides the embodiment, he also used the method of permutation and combination, he used the computer software to make seamless collage with cities images taken.
在这里，他移除了强加进去的“化身”，采取对现实进行了重新排列组合的方式，利用电脑软件对实拍的城市影像进行不露痕迹的拼贴。
The author thinks that, the system structure refers to the permutation and combination among the elements which come from the total of the interactions of the elements in the system.
作者认为系统的结构是指由系统内元素之间相互作用的总和所形成的元素的排列与组合。
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