The discriminant analysis on inorganic elementabundance shows that the palaeosedimentary environment of Jurassic in the Yanqi Basin is close to that of Dongying Sag.
萨胡判别分析证明，与煤共生的粗碎屑岩不是形成于河流环境，而是形成于深水浊积沉积环境。
2
Such anomalies are due to the relative abundance of the "isotopes" or varieties of each element.
这种反常现象是由于同位素比较丰富或者各个元素比较多样化。
3
While cerium oxide is a rare Earth element, it is one of the more common ones. Its abundance has been compared to copper.