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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。
youdao
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Moreover, permutation and combination are the basis of probability.
同时，它也是概率的基础。
youdao
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Moreover, permutation and combination are the basis of probability.
同时，它也是概率的基础。
youdao