The no . 3 mineral vein group of jiaojia gold depositin of minerogeretic patter are discussed 应对突发性灾难的农村社会保障制度研究
2.
The pegmatite nb - ta mineral veins were controlled by a group of horizontal tenso - shear axial - direction fault - fissure systems in the nne direction folding structures 铌钽伟晶岩矿脉受控于nne向褶皱构造的一组近水平张扭性轴向裂隙系。
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