n.光泽度；光泽
When the glossiness increases to some extent, the standard deviation and range of glossiness will decrease or tends to be stable. 随着光泽度逐渐提高，离散度也随着增加，但当光泽度提高到一定程度时，标准差和极差又会减小或趋于稳定。
When the glossiness increases to some extent, the standard deviation and range of glossiness will decrease or tends to be stable. 随着光泽度逐渐提高，离散度也随着增加，但当光泽度提高到一定程度时，标准差和极差又会减小或趋于稳定。
