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1·Repeatedly sampled brands (n=15) were compared via Wilcoxon signed rank tests.

重复采样的品牌（n＝5）通过魏克森讯号等级检定进行比较。

2·If the unsigned integer type has rank greater than or equal to the rank of the signed integer type, the common type is the unsigned type.

如果无符号整型的优先级高于或等于有符号类型，公共类型是无符号类型。