图1 广地龙22种元素指纹图谱
Fig 1 Fingerprint of 22 elements in pheretima
图2 30批样品在元素含量主成分的分布图
Fig 2 Distribution of 30 batch samples in principal components of elements’ contents
图3 22种元素加载散点图
Fig 3 Loading scatter plot for 22 elements
图1 广地龙22种元素指纹图谱
Fig 1 Fingerprint of 22 elements in pheretima
图2 30批样品在元素含量主成分的分布图
Fig 2 Distribution of 30 batch samples in principal components of elements’ contents
图3 22种元素加载散点图
Fig 3 Loading scatter plot for 22 elements