它是由多种天然极性矿物材料和多功能健康材料复合而成，并添加稀土元素，与天然矿物材料辐射的远红外线性能协同增强。
It's a compound of natural polar mineral material and multifunctional ceramic material can be more effective with far infrared rays that was eradiated by natural polar mineral.
然而，甘肃省的经济主要建立在采矿业和矿物提取的基础上，特别是稀土元素的提取。
However, most of Gansu's economy is based on mining and the extraction of minerals, especially rare earth elements.
揭示了煤中稀土元素的含量随着矿物含量、特别是黏土矿物含量的变化而显著变化的特征。
The study showed that the rare-earth element content in coal would be varied with the mineral contents, specially the clay content.
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