说明：  多尺度样本熵程序，实例中用于一段轴承故障数据，简单易懂。MultiscalePermutationEntropy函数中的PermutationEntropy也可以单独拎出来计算单个样本熵。
(The multi-scale sample entropy program, which is used for a section of bearing fault data in an example, is simple and easy to understand. The permutationentropy in the multiscale permutationentropy function can also be carried out separately to calculate the entropy of a single sample.)