The discriminant analysis on inorganic element abundance 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。
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。
While cerium oxide is a rare Earth element, it is one of the more common ones. Its abundance has been compared to copper.
氧化铈是一种较常见的稀土元素，其储存量可以与铜相媲美。
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